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Dremel 3100-1/15 vs Milwaukee 2460-20: Which Rotary Tool Fits Your Setup?

Pick the Dremel for a corded kit with its listed accessory set and integrated EZ Twist accessory wrench. Pick the Milwaukee if cordless M12 operation fits your work and you have a compatible battery; Milwaukee says the battery is sold separately. These source-backed setup differences do not establish which tool cuts or grinds faster.

Published by Pickoryx · Published 2026-10-17

Source checked 2026-10-17 19:14 UTC

Products compared

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The buying question

Do you want a corded 3100 kit with its listed accessory set, or the cordless 2460-20 tool that uses a separately purchased M12 battery, and how do their accessory-change steps differ?

The Dremel 3100-1/15 is a corded kit with 15 accessories and one attachment; the Milwaukee 2460-20 is cordless on the M12 platform, with its battery sold separately. Dremel uses an EZ Twist cap with an integrated wrench, while Milwaukee's manual specifies a spindle lock and separate collet wrench for accessory installation.

Quick verdict

Choose Dremel 3100-1/15 Corded Rotary Tool Kit if

  • You can work near an outlet and want the Dremel 3100-1/15 package, which the manufacturer lists with 15 accessories and one attachment.
  • You prefer the Dremel EZ Twist cap's integrated wrench for accessory changes.
View Dremel 3100-1/15 Corded Rotary Tool Kit on AmazonPaid link

Choose Milwaukee M12 2460-20 Rotary Tool if

  • Cord-free use is important and a compatible M12 battery is already part of your setup or is part of your planned purchase.
  • The 2460-20's included collet wrench and spindle-lock accessory-change process fit your work routine.
View Milwaukee M12 2460-20 Rotary Tool on AmazonPaid link
When to skip: Your worksite has no usable outlet and you do not have access to a compatible M12 battery system.
When the recommendation changes
  • If you need to work away from outlets, an M12 battery setup favors the Milwaukee; if you prefer not to manage a battery for this tool, the corded Dremel fits that preference.
  • If speed ratings are part of your choice, Milwaukee's official product page and its 2460-20 operator's manual list different maximum speeds; verify the rating with Milwaukee rather than inferring performance from the printed RPM figures.

The differences that matter

Power Platform And Package

Dremel 3100-1/15 Corded Rotary Tool Kit

Dremel identifies the 3100-1/15 as a 120 V corded rotary tool with a 6 ft cord; its US product page names a package with 15 accessories and one attachment.[1]

Milwaukee M12 2460-20 Rotary Tool

Milwaukee identifies the 2460-20 as an M12 12 V cordless rotary tool; it says the M12 battery is sold separately. Its product page lists five cutting wheels, a mandrel, and a wrench.[2]

What this changes: Choose around power access and battery setup first: the Dremel uses a cord and is sold as the named 3100-1/15 kit, while Milwaukee's 2460-20 requires the buyer to account for an M12 battery separately. Confirm the exact marketplace package contents.[1, 2]

The better fit depends on your priorities

Accessory Changes And Control Workflow

Dremel 3100-1/15 Corded Rotary Tool Kit

Dremel says the 3100's EZ Twist cap has an integrated wrench for changing accessories without an additional wrench.[1]

Milwaukee M12 2460-20 Rotary Tool

The 2460-20 operator's manual instructs users to remove the battery, press the spindle lock, and tighten the collet nut with a 3/8 in collet wrench; Milwaukee's product page lists a wrench in the package contents.[3, 2]

What this changes: The Dremel keeps its accessory-change wrench integrated into the cap, while Milwaukee's documented method uses a separate wrench. This is a difference in setup steps, not a claim that either tool changes bits faster in practice.[1, 3, 2]

The better fit depends on your priorities

Best for your routine

Starting with a corded rotary-tool kit and a listed selection of accessories

Best fit: Dremel 3100-1/15 Corded Rotary Tool Kit

Based on listed features, not comparative testing.

Dremel's 3100-1/15 US product page describes a 120 V corded model and a package with 15 accessories and one attachment. Check the retailer offer contents before purchase.

View Dremel 3100-1/15 Corded Rotary Tool Kit on AmazonPaid link

Using a cordless rotary tool within an existing M12 battery setup

Best fit: Milwaukee M12 2460-20 Rotary Tool

Based on listed features, not comparative testing.

Milwaukee identifies the 2460-20 as an M12 cordless rotary tool and says its battery is sold separately; this fit depends on having or obtaining a compatible M12 battery.

View Milwaukee M12 2460-20 Rotary Tool on AmazonPaid link

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

Compare the current exact offers only after accounting for whether an M12 battery is already available and which accessories are included. Factor in the cost of any M12 battery you still need, and verify what the current offer includes before comparing total setup costs.

Only current price observations are available here; there is not enough price history for a buy-now or wait recommendation.

Limitations

  • Milwaukee's official 2460-20 product page lists a 5,000–32,000 RPM range, while its operator's manual lists 5,000–37,000 RPM. This comparison does not rank maximum speed or infer cutting or grinding performance from those conflicting figures.
  • Manufacturer package descriptions may not match every retailer offer. Confirm the exact offer's tool, accessory, battery, and charger contents before buying.
  • No hands-on or controlled comparative testing was conducted, so this page makes no speed, output, durability, or reliability winner claim.

Questions shoppers ask

Does the Milwaukee 2460-20 include an M12 battery?

Milwaukee states that the M12 battery is sold separately. Check the exact retailer offer for any added battery or charger before comparing the complete setup cost.

Which rotary tool has the higher maximum speed?

The available official Milwaukee sources conflict: its product page lists a 32,000 RPM maximum, while the 2460-20 operator's manual lists 37,000 RPM. The Dremel product page lists 35,000 RPM. Because Milwaukee's own figures do not agree, this comparison does not declare an RPM winner or infer real-world cutting or grinding performance.

Methodology and sources

Compared power-source and package setup, then the documented accessory-change steps. The Milwaukee product page and its exact-model manual publish conflicting top-speed figures, so this article avoids an RPM ranking and performance conclusion.

AI assistance organized the cited model-specific facts and translated them into conditional setup guidance; neither tool was physically tested.

View 3 sources
  1. 1.Dremel 3100 Easy to Use Rotary Tool, 15 Accessories, 1 Attachment (3100-1/15)Dremel United States · Official specifications · Source checked 2026-10-17 19:14 UTC
    Evidence used on this page
    • US Spanish-language exact 3100-1/15 product page: model and package title; product description for 1.2 A motor, 5 speed settings, 5,000–35,000 RPM, 6 ft cord, EZ Twist cap with integrated wrench; technical specifications for 120 V and speed range: The United States product page identifies the 3100-1/15 corded configuration and package count, states its cord and voltage, and describes the EZ Twist integrated wrench for changing accessories.
  2. 2.M12 Rotary Tool 2460-20Milwaukee Tool · Official specifications · Source checked 2026-10-17 19:14 UTC
    Evidence used on this page
    • Exact 2460-20 product overview: M12 12 V cordless model, battery sold separately, included 1/8 in collet, five cutting wheels, mandrel, wrench, and product-page speed range: Milwaukee identifies the 2460-20 as an M12 cordless rotary tool, says the battery is sold separately, and lists accessory/package details. Its product page lists 5,000–32,000 RPM.
  3. 3.M12 Cordless Rotary Tool 2460-20 Operator's ManualMilwaukee Tool · Official support · Source checked 2026-10-17 19:14 UTC
    Evidence used on this page
    • Cover and specifications identify Cat. No. 2460-20; functional description, page 4, describes collet nut/spindle lock/speed dial; page 4, Installing Accessories, specifies removing battery and using the 3/8 in collet wrench; page 4 speed dial instructions list 5,000–37,000 RPM: The exact-model manual confirms the battery-powered M12 identity and details accessory installation. It lists a 37,000 RPM maximum, in conflict with the manufacturer's product page's 32,000 RPM maximum.

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