Milwaukee M12 Cordless 3/8 in. Lithium-Ion Ratchet Kit 2457-21 vs Milwaukee M12 FUEL 2557-20

What separates them

Price history

• Milwaukee M12 Cordless 3/8 in. Lithium-Ion Ratchet Kit 2457-21: lowest $78.57 on Oct 31 at MPR Tools & Equipment; $78.57 on Nov 2.
• Milwaukee M12 FUEL 2557-20: lowest $199.00 on Nov 2 at eBay.

Prices at every store

Specs compared

Questions and answers

Which has more torque, the 2457-21 or the 2557-20?

The 2557-20, at up to 55 ft-lbs versus 35 ft-lbs. That gap matters most on rusted or high-torque fasteners.

Is the FUEL 2557-20 worth the extra money?

Only if you need the extra torque and already own M12 batteries. The bare tool ran about $199.00 to $199.99 in early November 2026, versus about $78.57 to $78.69 for the complete 2457-21 kit in late October 2026.

Which is better for tight spaces?

The 2457-21 is shorter (10.75 in vs 11.8 in) and lighter (1.9 lbs vs 2.8 lbs with battery). Some 2557-20 owners say it feels bulky in hand.

Does the 2557-20 come with a battery?

No. It is a bare tool. The 2457-21 kit includes a 1.5 Ah battery, a 30-minute charger, a case and an adapter.

Which is faster?

The 2457-21 runs at 250 RPM versus 200 RPM for the 2557-20, so it spins down long threads quicker.

Which lasts longer?

The 2557-20's brushless motor should outlast the brushed motor in the 2457-21 under heavy daily use.