# Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) vs Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories: specs and price compared

A sourced, side-by-side comparison of the Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) (Milwaukee) and Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories (Genesis) among rotary tools.

## Side by side

| Spec | Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) | Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories |
| --- | --- | --- |
| US price | not published | $19.99 |
| Brand | Milwaukee | Genesis |
| Power source | cordless | corded |
| Amps or voltage | 12 V / 1.5 Ah | 1 A / 120 V |
| Speed range (rpm) | 5,000–32,000 RPM | 8,000–30,000 RPM |
| Max (rpm) | 32000 | 30000 |
| Variable speed | Yes | Yes |
| Brushless | No | No |
| Ez change accessories | No | No |
| Included accessories count | 5 | 40 |

## Key differences

- Power source: Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) cordless vs Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories corded
- Amps or voltage: Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) 12 V / 1.5 Ah vs Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories 1 A / 120 V
- Speed range (rpm): Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) 5,000–32,000 RPM vs Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories 8,000–30,000 RPM
- Max (rpm): Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) 32000 vs Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories 30000
- Included accessories count: Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) 5 vs Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories 40

## What reviewers say

**Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21)** — Only one whitelisted tester, Pro Tool Reviews, published a genuine hands-on review of this exact 2460-21 kit, and it is positive but qualitative with no lab benchmarks. They praised power, ease of use, price, and surprising run-time from the single battery, while noting the one-battery kit and material melting at full speed. (1 sourced review.)

## Sources

- Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21): https://www.milwaukeetool.com/products/details/m12-rotary-tool-kit/2460-21 (milwaukeetool.com, verified 2026-06-20)
- Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories: https://www.homedepot.com/p/Genesis-Variable-Speed-Rotary-Tool-Kit-with-40-Accessories-GRT2103-40/203656925 (homedepot.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/rotary-tools/milwaukee-m12-2460-21-vs-genesis-grt2103-40/
Cite: Per The Front Desk Review, Milwaukee M12 Cordless Lithium-Ion Rotary Tool Kit (2460-21) (not published) vs Genesis GRT2103-40 Variable Speed Rotary Tool with 40 Accessories ($19.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/rotary-tools/milwaukee-m12-2460-21-vs-genesis-grt2103-40/
License: CC BY 4.0.