
HERCULES 20V Brushless Cordless Variable-Speed Oscillating Multi-Tool – Tool Only
- Get longer runtime and more power with the HERCULES® 20V Brushless Cordless Variable-Speed Oscillating Multi-Tool. The high-performance brushless motor combined with 3.1° of oscillation range means faster, more efficient performance. Variable-speed control matches oscillation speed to application. The compact lightweight design is combined with vibration control technology for maximum comfort and control. A keyless blade-change mechanism makes changing blades easy and minimizes downtime.
- High-performance brushless motor delivers more power and runtime while running cooler and longer
- 3.1° oscillation angle range for maximum cutting performance
- 6-speed variable-control dial matches speed to application
- Compact, lightweight design with barrel grip for maximum comfort during extended use
- Keyless blade-changing system for quick, effortless blade changes
- Ultra-bright LED light provides clear view of work space for accurate cuts
- Ergonomic design minimizes vibration felt by user for more control and comfort
- Constant power maintains speed and power while under heavy loads
$79.99
Let me take you back to last fall when I found myself staring blankly at a half-demolished bathroom, wondering how on earth I was going to cut through that awkward pipe fitting without destroying the surrounding drywall. My neighbor Tom—you know, the one with the immaculate garage and seemingly endless collection of tools—poked his head in and promptly disappeared, returning moments later with what looked like a power tool from the future.
“Trust me,” he said, handing me his Hercules oscillating tool. “This will change everything.”
He wasn’t exaggerating. Three hours later, I was at Harbor Freight purchasing my own, and I haven’t looked back since. The Hercules oscillating multi-tool isn’t just a tool—it’s the solution to problems you didn’t even know you had.
After months of cutting, sanding, grinding, and scraping with my trusty Hercules, I’ve compiled everything I wish I’d known before buying this versatile powerhouse. Whether you’re a weekend warrior or a seasoned contractor, this comprehensive guide will help you determine if the Hercules oscillating tool deserves a spot in your arsenal.
What Exactly Is a Hercules Oscillating Tool?
Before diving into the nitty-gritty, let’s clarify what this magic wand actually does. The Hercules oscillating tool is a multi-function power tool that—as the name suggests—oscillates rather than rotates. The blade or attachment moves back and forth at incredibly high speeds (up to 20,000 oscillations per minute) but with minimal movement (just a few degrees).
This unique motion allows for incredible precision cuts where traditional rotating tools would be too aggressive. Imagine trying to perform surgery with a chainsaw versus a scalpel—that’s the difference between a circular saw and an oscillating tool in tight spaces.
I’ve used mine for:
- Making flush cuts in doorjambs when installing flooring
- Removing old grout between tiles
- Cutting access holes in drywall around existing fixtures
- Trimming undercutting baseboard molding
- Sanding in tight corners where my orbital sander couldn’t reach
- Scraping off old adhesive and caulk
- Cutting through nails embedded in wood
The beauty of this tool lies in its versatility. With the right attachment, it transforms from a precision cutting tool to a sander, scraper, grinder, or polisher in seconds.
The Hercules Brand: Harbor Freight’s Premium Line
If you’re familiar with Harbor Freight, you might know they offer several tiers of tools. The Hercules line represents their premium offering, positioned to compete with professional-grade tools from brands like DeWalt, Milwaukee, and Makita, but at a more accessible price point.
When I first held the Hercules oscillating tool, I was genuinely surprised by its solid construction. At 3.5 pounds, it has enough heft to feel substantial without causing fatigue during extended use. The rubberized grip provides excellent control, which is crucial when making precise cuts.
How Does Hercules Stack Up Against the Competition?
Let’s be honest—I was skeptical at first. Harbor Freight has a somewhat checkered reputation among some tool aficionados, but their Hercules line has been working hard to change that perception.
After using my Hercules oscillating tool for everything from bathroom renovations to crafting projects, I can confidently say it holds its own against much more expensive brands. The 12-amp motor delivers impressive power, easily cutting through materials that made my old entry-level multi-tool stall and overheat.
In direct comparison to the DeWalt DWE315K (which costs nearly twice as much), the Hercules performs remarkably well in terms of power and cutting ability. The DeWalt might have slightly better ergonomics and a more refined variable speed control, but for most applications, you’d be hard-pressed to notice a significant difference in performance.
Where the higher-end brands pull ahead is in their vibration control and noise level. The Hercules isn’t the quietest tool in the shed, and during extended use, you’ll definitely notice more vibration transfer to your hands compared to premium brands with advanced anti-vibration systems. For weekend projects, this isn’t a dealbreaker, but professional contractors putting in 8-hour days might appreciate the reduced fatigue offered by more expensive models.
Milwaukee and Fein tools also offer slightly more sophisticated blade change systems, though the Hercules tool-free blade change mechanism is perfectly adequate for most users. I can swap blades in under 10 seconds, which is quick enough for my needs.
The Corded vs. Cordless Debate
Hercules offers both corded and cordless versions of their oscillating tool, and this decision point tripped me up initially. I ultimately chose the corded model (20V, 2.5Ah batteries) for a few reasons:
- I wanted maximum power without worrying about battery life during longer projects
- The corded version was $30 cheaper
- I already had too many different battery platforms in my garage
That said, the cordless model offers obvious advantages in portability and convenience. If you’re already invested in the Hercules 20V battery platform with other tools, going cordless makes a lot of sense. The freedom to work without hunting for an outlet or dealing with cord management is significant, especially when working in tight spaces like cabinets or crawlspaces.
The cordless model delivers nearly identical performance to the corded version, with the only noticeable difference being a slight power reduction when the battery approaches depletion. The included 2.5Ah battery provides approximately 30-45 minutes of continuous use, which is more than adequate for most tasks. Heavy-duty applications like cutting hardwoods or metal will drain the battery faster.
If you opt for the cordless route, I’d recommend picking up a spare battery to avoid downtime during bigger projects.
Power and Performance Specifications
Let’s talk numbers. The Hercules oscillating tool operates at 11,000-20,000 OPM (oscillations per minute), which is comparable to professional-grade competitors. This wide range allows for precise control depending on your application—lower speeds for delicate work and maximum speed for powering through tougher materials.
The 12-amp motor (4.0 amps for the cordless version) delivers impressive torque, easily cutting through materials that would stall lesser tools. During my kitchen backsplash project, it sliced through ceramic tile with surprising ease, though I did notice it heated up more quickly than my contractor friend’s Makita.
An important feature I’ve come to appreciate is the variable speed dial located on the back of the tool. This allows for one-handed adjustment while maintaining your grip, which is particularly useful when transitioning between different materials. The speed settings are numbered 1-6 rather than showing actual OPM, but after a few uses, you develop an intuitive sense for which setting works best for different applications.
One performance aspect where the Hercules truly shines is in its consistent power delivery. Even under load, it maintains speed better than my previous budget oscillating tool, which would bog down noticeably when cutting denser materials.
Price Point and Value Proposition
Now for the part that initially drew me to the Hercules line—the price. The corded Hercules oscillating tool typically retails for around $99, while the cordless version with one battery and charger runs about $129. Compared to comparable models from DeWalt ($179+), Milwaukee ($199+), or Fein ($299+), the savings are substantial.
But the real value assessment comes down to the performance-to-price ratio, and this is where the Hercules truly excels. For DIY enthusiasts and even contractors who don’t depend on their oscillating tool daily, the Hercules offers 80-90% of the performance of premium brands at roughly 50-60% of the cost.
Harbor Freight frequently runs sales and coupon promotions that can bring the price down even further. I purchased mine during their parking lot sale and saved an additional 20%, making it an absolute steal. They also occasionally offer bundle deals with additional accessories or batteries.
The “Inside Track Club” membership (Harbor Freight’s discount program) provides access to exclusive coupons and early sales, which can be worthwhile if you’re planning several tool purchases throughout the year.
Included Accessories and Available Attachments
My Hercules oscillating tool came with a respectable starter kit of accessories:
- 1 wood/metal cutting blade
- 1 semi-circle blade for plunge cuts
- 1 scraper blade
- 1 sanding pad
- 5 assorted sanding sheets
- A plastic carrying case
This selection covers the basics for most common applications, though I quickly found myself wanting more specialized blades for specific tasks. The good news is that the Hercules uses a universal accessory interface compatible with most major brands’ oscillating tool attachments.
I’ve successfully used blades from Bosch, Imperial, and Dremel without any issues. This compatibility is a huge advantage, as it allows you to shop around for the best blade for each application rather than being locked into proprietary accessories.
That said, Harbor Freight’s Hercules and Bauer brand accessories are surprisingly good quality for the price. Their carbide-tipped blades, in particular, offer excellent durability for cutting through nail-embedded wood or hard materials, typically lasting 3-5 times longer than standard bi-metal blades.
For specialized applications, I particularly recommend:
- The Hercules flush-cut wood and metal blade for door jambs
- The flexible scraper for adhesive removal
- The carbide-grit grout removal blade for bathroom renovations
- The diamond-coated blade for cutting ceramic tile
One accessory I wish had been included is a depth guide attachment. I ended up purchasing one separately, which has been invaluable for making consistent plunge cuts in drywall and wood.
Blade Changing: Simpler Than You Think
One of my initial concerns was how complicated it would be to change attachments. The good news is that the Hercules features a tool-free blade change system that’s straightforward and efficient.
Here’s the quick process:
- Unplug the tool (or remove the battery for the cordless version)
- Pull the lever on top of the tool forward
- Remove the current attachment
- Insert the new attachment
- Release the lever to secure
The whole process takes seconds, and the locking mechanism provides a secure grip on the attachment. I’ve never had an attachment come loose during operation, even during heavy-duty cutting tasks.
One tip I’ve learned: keep the mounting surfaces clean. Dust buildup can occasionally interfere with proper seating of the blade, leading to increased vibration. A quick blast of compressed air or a wipe with a cloth keeps everything functioning smoothly.
Cutting Metal: Yes, But With Caveats
When my son’s bike frame needed modification, I wondered if the Hercules could handle cutting through metal. The answer is yes, but with some important qualifications.
The Hercules oscillating tool can effectively cut through:
- Thin sheet metal (up to 16 gauge)
- Aluminum profiles
- Copper pipe
- Nails and screws embedded in wood
- Steel reinforcement in concrete (with the right blade)
For best results with metal cutting, I recommend:
- Using a blade specifically designed for metal (bi-metal or carbide-tipped)
- Operating at a lower speed setting (2-3) to prevent overheating
- Applying cutting oil for thicker materials
- Taking breaks to allow the tool and blade to cool down
I successfully cut through a 1/2″ copper pipe during a plumbing repair, but the tool did heat up considerably. For heavier-duty metal cutting, especially steel beyond 1/8″ thickness, a reciprocating saw or angle grinder would be more appropriate tools.
That said, the oscillating tool’s precision makes it ideal for metal cutting in tight spaces where other tools simply can’t fit.
Sanding Capabilities: The Unexpected MVP
One application where the Hercules oscillating tool has repeatedly proven its worth is in detail sanding. The triangular sanding pad attachment reaches corners and edges that are impossible for traditional sanders.
I recently restored an antique dresser with intricate molding details, and the oscillating tool made quick work of the sanding process. The variable speed control allowed me to use higher speeds for initial material removal and then dial it back for finer finishing work.
The sanding pad accepts standard hook-and-loop (velcro) triangular sheets, which are readily available in grits ranging from 40 (very coarse) to 240 (very fine). The Hercules-branded sandpaper is decent quality and reasonably priced, but I’ve found that premium sandpaper from brands like Diablo or Norton lasts significantly longer, especially for hardwoods.
One limitation I’ve encountered is that the sanding attachment doesn’t have dust collection capability. This isn’t unusual for oscillating tools, but it does mean more clean-up and the need for a dust mask during extended sanding. I sometimes hold the nozzle of my shop vac near the work area, which helps somewhat.
For larger flat surfaces, a dedicated random orbital sander is still the better tool, but for detail work, the oscillating tool’s sanding capability is invaluable.
Common Issues and Their Solutions
No tool is perfect, and after extensive use, I’ve identified a few quirks and issues with the Hercules oscillating tool:
- Heat buildup during extended use: The motor housing can get quite warm after 10-15 minutes of continuous operation, especially at higher speeds. Taking short breaks allows the tool to cool down and extends its lifespan.
- Blade wear on abrasive materials: When cutting tile, concrete, or masonry, blades wear out noticeably faster. Investing in quality carbide or diamond-coated blades is worth the extra cost for these applications.
- Occasional blade slippage: Though rare, I’ve experienced the blade coming slightly loose during particularly vigorous applications. Double-checking that the locking mechanism is fully engaged prevents this issue.
- Vibration transfer to hands: During extended use, the vibration can cause fatigue. Wearing anti-vibration gloves helps mitigate this effect.
- Power cord flexibility: The corded model’s power cord is somewhat stiff, especially in colder temperatures. This can be annoying when working in tight spaces, though it does loosen up with use.
None of these issues are dealbreakers, and most are common across all oscillating tools regardless of brand. Being aware of them allows you to adapt your work process accordingly.
Warranty and Customer Support
The Hercules oscillating tool comes with a 90-day satisfaction guarantee and a 2-year limited warranty. This is less than the 3-5 year warranties offered by premium brands, but still provides reasonable coverage for manufacturer defects.
In my experience, Harbor Freight has become increasingly customer-focused in recent years. When I had a question about compatible accessories, the store associate went out of his way to test-fit various blades to ensure compatibility.
The warranty process is straightforward—simply return the tool to any Harbor Freight store with your receipt within the warranty period. Based on user forums and reviews, most warranty claims are handled efficiently, though some users report inconsistent experiences depending on the individual store.
For the price point, the warranty coverage is fair, though professional users who depend on their tools daily might prefer the longer coverage and service options provided by premium brands.
Beginner’s Guide to Using a Hercules Oscillating Tool
If you’re new to oscillating tools, there’s a bit of a learning curve, but it’s shorter than you might expect. Here are some tips I wish I’d known when starting out:
- Start with scrap material: Before tackling your actual project, practice on similar scrap material to get a feel for the tool’s behavior.
- Let the tool do the work: Unlike many power tools, the oscillating tool requires minimal pressure. Forcing it can cause overheating and reduce cutting efficiency.
- Use the right speed for the material:
- Soft woods: 4-6
- Hardwoods: 3-5
- Drywall: 3-4
- Plastic: 2-3
- Metal: 1-3
- Grout removal: 3-5
- Sanding: 3-6 (coarse to fine)
- Make plunge cuts correctly: Place the edge of the blade on the material, start the tool at low speed, and gradually increase speed as you slowly pivot the blade to a perpendicular position.
- Manage blade heat: For longer cuts, especially in dense materials, pause occasionally to let the blade cool down. Overheated blades dull quickly.
- Use the edge of sanding pads: The tip and edges of the triangular sanding pad wear fastest. Rotate your approach to use all areas of the pad for even wear.
- Support both ends of the material: When making cuts, try to support the material on both sides of the cut line to prevent binding as the cut completes.
- Start with longer blades: Longer blades provide better reach but have more flex. As you gain experience, you’ll learn when to use shorter, more rigid blades for precision work.
The versatility of the oscillating tool means you’ll discover new applications as you use it. What started as a tool for my bathroom renovation has become my go-to solution for dozens of tasks I would have approached differently before.
Blade Compatibility With Other Brands
One of the most frequent questions I receive about the Hercules oscillating tool concerns blade compatibility. The good news is that the Hercules uses what has essentially become the industry standard mounting system, compatible with most major brands.
I’ve personally used blades from:
- Imperial
- Bosch
- Dremel
- Milwaukee
- Ridgid
- Ryobi
- DeWalt
All fit without adapters or modifications. The only major brand I’ve encountered that doesn’t work directly is Fein’s older StarLock system, which requires an adapter.
This compatibility is a significant advantage, as it allows you to choose blades based on quality and price rather than being locked into proprietary attachments. I often purchase specialized blades from premium brands for specific applications while using more affordable options for general-purpose work.
For example, I use Bosch carbide-tipped blades for cutting nail-embedded wood (they last significantly longer) but stick with the more affordable Hercules blades for standard drywall work where blade wear is less of an issue.
Finding the Best Hercules Model for Your Needs
Harbor Freight offers a few different Hercules oscillating tool options:
- Hercules 12-amp Corded Oscillating Multi-Tool (Item #63113) – $99.99
- Maximum power option
- No battery limitations
- Best for extended workshop use
- Hercules 20V Cordless Oscillating Multi-Tool (Item #63618) – $129.99
- Includes 2.5Ah battery and charger
- Greatest mobility and convenience
- Ideal for job sites without power access
- Hercules 20V Cordless Oscillating Multi-Tool (Tool Only) (Item #63619) – $89.99
- For those already invested in the Hercules 20V battery platform
- Same performance as the kit version without battery/charger
For most homeowners and DIYers, I recommend the corded version unless you already own other Hercules 20V tools with compatible batteries. The consistent power delivery and not having to worry about battery life make it the most practical choice for periodic use.
However, if you frequently work in areas without convenient power access or simply hate managing power cords, the cordless version delivers nearly identical performance with added convenience.
Professional contractors might consider purchasing both—the corded version for workshop use and extended projects, and the cordless for quick jobs and finishing work that requires greater mobility.
Maintenance Tips for Long-Term Performance
After a year of regular use, I’ve developed a simple maintenance routine that keeps my Hercules oscillating tool in top condition:
- Regular cleaning: After each use, I blow out the ventilation slots with compressed air to prevent dust buildup. For the cordless version, I also clean the battery contacts occasionally with electronics cleaner.
- Inspect the power cord: For the corded model, regularly check for any nicks or damage to the power cord, especially near the strain relief at the tool.
- Lubricate moving parts: A tiny drop of lightweight machine oil on the blade change mechanism every few months keeps it operating smoothly.
- Check and tighten housing screws: Vibration can gradually loosen screws. A quick check with a screwdriver prevents problems.
- Store properly: I keep mine in the original case with blades separated to prevent dulling. For the cordless version, storing batteries at around 50% charge when not in use extends their life.
- Monitor carbon brushes: After extensive use (typically 100+ hours), performance may decline as carbon brushes wear. These are replaceable, though many users simply opt for a new tool given the reasonable price point.
With proper maintenance, I expect to get 3-5 years of reliable service from my Hercules oscillating tool before considering a replacement, which represents excellent value given the purchase price.
Cutting Capacity: What Materials Can It Handle?
Over the past year, I’ve pushed my Hercules oscillating tool through a wide range of materials to test its limits. Here’s a practical breakdown of its cutting capabilities:
Excellent Performance (Cuts Easily):
- Drywall (up to 5/8″)
- Softwoods (pine, cedar, fir)
- Plywood and OSB
- PVC and plastic pipes (up to 2″ diameter)
- Laminate flooring
- Carpet and underpayment
- Thin sheet metal (up to 18 gauge)
- Aluminum trim
Good Performance (Requires Appropriate Blade/Technique):
- Hardwoods (oak, maple, walnut)
- Fiberglass
- Medium-density fiberboard (MDF)
- Ceramic tile (with diamond blade)
- Thin steel (up to 1/8″)
- Copper and brass
- Grout and thin mortar
- Fiberglass insulation
Challenging (Possible but Not Ideal):
- Concrete (surface scoring only)
- Stone (surface cuts with diamond blade)
- Thick steel (beyond 1/8″)
- Cast iron
- Hardened fasteners
- Very dense hardwoods (ipe, greenheart)
For materials in the “challenging” category, specialized tools like reciprocating saws, circular saws with appropriate blades, or angle grinders are generally more effective. That said, the oscillating tool’s precision and ability to make plunge cuts still make it useful for starting or finishing cuts in these materials where other tools can’t access.
The key to success with tougher materials is using the right blade, maintaining an appropriate speed setting, and allowing the tool to work at its own pace rather than forcing it.
Finding Deals and Promotions
Harbor Freight is known for their regular sales and promotions, and the Hercules line is frequently included. Here are some strategies I’ve used to maximize savings:
- Inside Track Club Membership: For $29.99 annually, this membership provides exclusive coupons and early access to sales. If you’re planning to purchase several Harbor Freight tools, the savings can quickly exceed the membership cost.
- Holiday Sales: Harbor Freight runs significant sales during major holidays (Memorial Day, July 4th, Labor Day, Black Friday). These often include the best prices on Hercules tools.
- Parking Lot Sales: Several times a year, Harbor Freight holds “parking lot sales” with special pricing on select tools. These are advertised in their flyers and online.
- Bundle Deals: Occasionally, they offer the oscillating tool bundled with additional accessories or batteries at a discounted price compared to purchasing separately.
- Coupon Database: Websites like hfqpdb.com (Harbor Freight Coupon Database) track and archive Harbor Freight coupons, allowing you to find the best available discount.
- Email Newsletter: Signing up for Harbor Freight’s email list provides advance notice of sales and occasional subscriber-exclusive coupons.
I purchased my Hercules oscillating tool during a parking lot sale for $79.99, a $20 savings off the regular price. With the included accessories, this represented excellent value compared to comparable models from other manufacturers.
Final Verdict: Is the Hercules Oscillating Tool Right for You?
After a year of extensive use across dozens of projects, I can confidently say the Hercules oscillating tool deserves serious consideration for both DIY enthusiasts and value-conscious professionals.
You should choose the Hercules if:
- You want 80-90% of premium brand performance at 50-60% of the cost
- You need a versatile tool for occasional to regular use
- You appreciate the universal accessory compatibility
- You have a Harbor Freight nearby for warranty service if needed
- You’re willing to perform basic maintenance
You might want to consider premium brands if:
- You use your oscillating tool professionally on a daily basis
- You require the absolute lowest vibration levels for all-day comfort
- You need specialized features like automatic speed control under load
- A longer warranty period is critical for your business needs
- You’ve already invested heavily in another brand’s battery platform
For my needs as an active DIYer tackling 3-4 major home renovation projects yearly, the Hercules hits the sweet spot between performance and value. The money saved compared to premium brands has allowed me to invest in quality blades and additional accessories that expand the tool’s capabilities.
The Hercules oscillating tool isn’t just a tool—it’s the solution to problems you didn’t even know you had. From precise cuts in tight spaces to detail sanding in corners, grout removal in bathrooms, and countless other applications, it has earned its place as one of the most frequently used tools in my collection.
Whether you’re just starting your tool collection or looking to add versatility to an established workshop, the Hercules oscillating tool offers remarkable value that’s difficult to overlook. Just be warned—once you experience its problem-solving capabilities, you’ll wonder how you ever managed without it.