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If you’re a DIY enthusiast looking to cut, grind, or polish, the Dremel 8240-5 and the Milwaukee 2460-20 are two of the most popular 12-volt cordless rotary tools on the market. The Dremel spins up to 35,000 RPM while the Milwaukee tops out at 32,000 RPM, but raw speed isn’t the only thing that matters.
This comparison is for anyone who wants a reliable, cordless rotary tool for weekend projects and home repairs. The big trade-off here is Dremel’s massive accessory ecosystem versus Milwaukee’s legendary durability and longer warranty. Let’s break down which one actually deserves a spot in your toolbox.
🏆 Quick Picks — My Top Recommendations
Best Overall: Dremel 8240-5
Faster top speed at 35,000 RPM and includes a 2Ah battery, charger, and 5 accessories in the kit — Check Price →
Runner-Up: Milwaukee 2460-20
Weighs only 14.4 ounces and has a 5-year warranty, making it the tougher, lighter option — Check Price →
Here’s how the Dremel 8240-5 and Milwaukee 2460-20 stack up side-by-side on the specs that actually matter for DIY work.
Full Specs Comparison
| Specification | Dremel 8240-5 12V Cordles | Milwaukee Cordless Rotary |
|---|---|---|
| Voltage | ✅ 12V | 12V |
| Power Source | Battery | Cordless |
| Variable Speed | ✅ Yes | ✅ Yes |
| Speed Range | — | ✅ 5000-32000 |
| Collet Size | — | ✅ 1/8-inch |
| Battery Capacity | ✅ 2Ah | — |
| Charger Included | ✅ Yes | — |
| Accessories Included | ✅ 5 | — |
| Wrench Included | ✅ Yes | — |
| Carry Bag | ✅ Yes | — |
| Recommended Use | Deburring, Grinding, Polishing, Sanding | Cutting, Grinding, Sanding, Polishing |
| Color | Black | Red/Black |
| Brand | Dremel | Milwaukee |
Individual Product Breakdown
I spent time digging through the specs and user feedback for both of these cordless rotary tools. Here’s my honest take on each one after looking at what they offer for DIY enthusiasts.
Dremel 8240-5 12V Cordless Rotary Tool Kit
12V | 5,000–35,000 RPM | 2Ah battery | 3.4 lbs
- COMPACT, PORTABLE, & POWERFUL: Dremel cordless rotary tool with 12 Volt...
- INNOVATIVE TOOL DESIGN: This Dremel rotary tool's sleek and ergonomic...
- VERSATILITY: Dremel tools are able to perform the widest range of...
The Dremel 8240-5 is the complete package right out of the box. It spins up to 35,000 RPM, which is the fastest of the two, and the included 2Ah battery gives you up to 2 hours of runtime. I really like the patented EZ Twist Nose Cap that lets you swap accessories without needing a wrench — that’s a huge time-saver mid-project. The 360-degree grip zone makes it comfortable to hold for extended sessions, though at 3.4 pounds it’s noticeably heavier than the Milwaukee. This is the best choice if you want a full kit with battery, charger, and 5 accessories included from day one.
✅ Pros
- Top speed of 35,000 RPM for faster cutting and grinding
- EZ Twist Nose Cap for tool-free accessory changes
- Includes 2Ah battery, charger, and 5 accessories in the kit
- LED battery life indicator so you know when to recharge
❌ Cons
- Heavier at 3.4 pounds compared to the Milwaukee
- Only a 2-year warranty versus Milwaukee’s 5 years
Milwaukee Cordless Rotary Tool
12V | 5,000–32,000 RPM | 14.4 oz | 5-year warranty
- Power Tools and Accessories
- Country of manufacture: China
- Manufacturer: Milwaukee
The Milwaukee 2460-20 is the featherweight champion here at just 14.4 ounces, making it incredibly easy to maneuver for detailed work. It hits a top speed of 32,000 RPM — that’s about 10% faster than the competition per Milwaukee’s claims — and the grinder-style exhaust ports keep it cool during heavy use. The 5-year warranty is the real standout, giving you peace of mind that this tool will last. However, the base kit is more bare-bones; you get a cutting wheel, mandrel, and wrench but no battery or charger included, which is a big consideration if you’re not already in the Milwaukee M12 ecosystem.
✅ Pros
- Ultra-light at 14.4 ounces for fatigue-free use
- 5-year manufacturer warranty — 2.5x longer than Dremel
- Protected front bearing and grinder-style exhaust for durability
- 1/8-inch collet compatible with all standard rotary accessories
Battery and charger not included in the base kit
Which One Should You Buy?
Honestly, both of these are excellent cordless rotary tools, but the right pick really comes down to what you already own and how you plan to use it. Let me break down who each one suits best.
Dremel 8240-5 is right for you if…
- You want everything in one box — the 2Ah battery, charger, and 5 accessories mean you can start working immediately.
- You need the fastest cutting speed at 35,000 RPM for quick material removal.
- You value tool-free accessory swaps with the patented EZ Twist Nose Cap during detailed projects.
Milwaukee 2460-20 is right for you if…
- You already own Milwaukee M12 batteries and chargers — this bare tool drops right into your existing setup.
- You need a super lightweight tool at just 14.4 ounces for overhead work or long detailing sessions.
- You want the peace of mind of a 5-year warranty that outlasts most competitors.
❌ Who Should Skip All of These?
If you’re doing heavy-duty grinding on metal all day, a corded rotary tool with a higher wattage will give you more consistent power and never run out of juice. These 12V cordless options are best for light to medium DIY tasks, not professional-grade daily abuse.
For the typical DIY enthusiast who wants a complete, ready-to-go kit with the fastest speed, I’d grab the Dremel 8240-5. But if you’re already invested in the Milwaukee M12 system, the 2460-20 is the smarter buy — you just need to pick up a battery separately.
Frequently Asked Questions
Which is better for DIY enthusiasts: the Dremel 8240 or the Milwaukee 2460?
For most DIY folks, I’d say the Dremel 8240-5 is the better all-around pick because it comes as a complete kit with the 2Ah battery, charger, and 5 accessories included. It also spins faster at 35,000 RPM versus the Milwaukee’s 32,000 RPM, which gives you quicker cuts on most materials. The Milwaukee wins if you’re already in the M12 battery system or if you prioritize the lighter weight at just 14.4 ounces.
Is the Dremel 8240 worth the extra cost over the Milwaukee?
Actually, the Dremel 8240-5 typically costs less than the Milwaukee when you compare what’s in the box. The Dremel includes its battery, charger, and accessories, while the Milwaukee 2460-20 is a bare tool that requires you to buy a battery and charger separately. So if you’re starting from scratch, the Dremel is the better value hands down.
Which cordless rotary tool has more power: Dremel 8240 or Milwaukee 2460?
The Dremel 8240 has the edge on raw speed at 35,000 RPM maximum, which translates to faster cutting and grinding. The Milwaukee tops out at 32,000 RPM, which is still plenty for most DIY work but not quite as aggressive. However, the Milwaukee’s grinder-style exhaust ports help it maintain performance under sustained load, so it may feel more consistent during longer sessions.
How long does the battery last on the Dremel 8240 vs the Milwaukee?
The Dremel 8240 comes with a 2Ah battery that provides up to 2 hours of runtime, which is solid for a cordless rotary tool. The Milwaukee’s runtime depends on which M12 battery you pair with it since the tool doesn’t include one — a 2Ah M12 battery gives similar runtime to the Dremel. The key difference is that the Dremel includes its battery in the box, while the Milwaukee doesn’t.
Which rotary tool is easier to handle for detailed work?
The Milwaukee 2460 is the clear winner for fine, detailed work because it weighs just 14.4 ounces — that’s less than half the Dremel’s 3.4 pounds. That lighter weight makes a big difference when you’re doing intricate engraving or sanding for extended periods. The Dremel’s 360-degree grip zone is comfortable, but the Milwaukee’s featherweight design is simply easier to maneuver.
Which has a better warranty: Dremel or Milwaukee?
Milwaukee wins this one outright with a 5-year manufacturer warranty on the 2460-20, while the Dremel 8240 only comes with a limited 2-year warranty. If long-term durability and peace of mind are your priorities, that extra 3 years of coverage is a significant advantage for Milwaukee. That said, Dremel’s reputation for reliability is solid, and the 2-year warranty covers most typical DIY usage.
My Final Verdict
For the average DIY enthusiast, the Dremel 8240-5 is my clear winner. It delivers a faster top speed at 35,000 RPM, includes the 2Ah battery, charger, and 5 accessories right in the box, and its EZ Twist Nose Cap makes accessory changes effortless. The Milwaukee 2460-20 is the better pick if you’re already invested in the M12 battery system or need the featherlight 14.4-ounce body for long detailing sessions.
If you’re still on the fence, think about what’s actually in the box. The Dremel gives you a complete, ready-to-work kit at a lower price point, while the Milwaukee requires a separate battery purchase. For most people, that alone should clinch the decision — go with the Dremel 8240-5.
Winner: Dremel 8240-5
- COMPACT, PORTABLE, & POWERFUL: Dremel cordless rotary tool with 12 Volt...
- INNOVATIVE TOOL DESIGN: This Dremel rotary tool's sleek and ergonomic...
- VERSATILITY: Dremel tools are able to perform the widest range of...
This is the complete package for DIYers — faster at 35,000 RPM, includes battery and charger, and backed by Dremel’s trusted accessory ecosystem.
Runner-Up: Milwaukee 2460-20
- Power Tools and Accessories
- Country of manufacture: China
- Manufacturer: Milwaukee
Best for M12 ecosystem users who want the lightest tool at 14.4 ounces and a 5-year warranty that beats everyone else.
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