Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
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M12 · Brushless
M12 FIR12 Ratchet No product photo yet
Ratchets · Milwaukee M12

Milwaukee M12 FIR12-0 12V FUEL Brushless 1/2″ Ratchet (Body Only)

81Nm3 years (with registration)

Milwaukee M12 FIR12: 1/2" cordless ratchet, 81 Nm motor torque, up to 175 rpm.

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1/2"
Drive
81Nm
Max torque (motor)
175rpm
Top speed

Where it sits among 1/2" ratchets

Scaled against the 6 ratchets with a 1/2" drive we list, so other sizes aren't in the mix. Not a score: bigger isn't always better for your job.

Max torque (motor)81Nm
60Nm lowestBosch GRC 12V-60 1/2 SNhighest 108NmMilwaukee M12 FIR12G2
Top speed175rpm
175rpm lowestThis onehighest 300rpmMilwaukee M12 FIR12G2
Vibration (fastening)2.1m/s²
2.1m/s² lowestThis onehighest 5.8m/s²Milwaukee M12 FIR12G2
Noise (LpA)75.3dB(A)
75.3dB(A) lowestThis onehighest 87dB(A)Milwaukee M12 FIR12G2
Compare it with: + Bosch GRC 12V-60 1/2 SN + DeWalt DCF512E + Makita WR100D + Einhell TE-RW 18/60 Li

Full specs

From Milwaukee's own documentation. Checked 17/10/2026. Report a spec error ›

Drive & Torque

Drive1/2"
TypeStandard
Max torque (motor)81 Nm
Top speed175 rpm

Power & Motor

Voltage12V
MotorBrushless

Physical & Build

Noise level75.3 dB(A) LpA / 86.3 dB(A) LwA
Vibration (fastening)2.1 m/s²

Powered by Milwaukee M12 · 6

All 6 batteries that fit this tool, smallest first. Kits and chargers ›

M12B2 2.0Ah · 24Wh 0.2kg from £25.95at Tooled Up + £6.95 delivery View at Tooled Up ›
M12HB2.5 2.5Ah · 30Wh 0.2kg from £32.95at Tooled Up + £6.95 delivery View at Tooled Up ›
M12B3 3.0Ah · 36Wh 0.2kg from £29.95at Tooled Up + £6.95 delivery View at Tooled Up ›
M12B4 4.0Ah · 48Wh 0.4kg from £39.95at Tooled Up + £6.95 delivery View at Tooled Up ›
M12HB5 5.0Ah · 60Wh 0.42kg from £59.95at Tooled Up + £6.95 delivery View at Tooled Up ›
M12B6 6.0Ah · 72Wh 0.4kg from £49.95at Tooled Up + £6.95 delivery View at Tooled Up ›

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Warranty · 3yr

Up to 3 years1 year as standard, 3 once you register it with Milwaukee
Register with Milwaukee ›
Register within 30 days of buying Own one? Add it to My Tools and we'll remind you before the 30 days run out

Register within 30 days. Batteries extend to 2yr (1+1); chargers, M28 batteries & accessories excluded; MX FUEL 2yr.

Warranty terms are set by the maker and can change. Always confirm current cover on their site before you buy.

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