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M18 · Brushless

M18 FSAG125XB Angle grinder No product photo yet

Angle Grinders · Milwaukee M18

Milwaukee M18 FSAG125XB 18V FUEL Brushless 125mm Slide Switch Angle Grinder (Body Only)

2kg bare18V3 years (with registration)

18V M18 FUEL brushless 125mm angle grinder. 8500rpm, M14 spindle with FIXTEC tool-free nut. Slide switch. Anti-Kickback, brake and soft start. Body only.

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125mm

Disc

8,500rpm

Max speed

2kg

Weight (bare)

Where it sits among 125mm angle grinders

Scaled against the 59 angle grinders with a 125mm disc we list, so other sizes aren't in the mix. Not a score: bigger isn't always better for your job.

Max speed8,500rpm

7,000rpm lowestDeWalt DCG412highest 12,000rpmDeWalt DWE4117

Weight (bare)2kg

1.57kg lightestEinhell TP-AG 18/125 F Li BLheaviest 2.9kgMakita GA5021C

Noise (LpA)82.6dB(A)

79dB(A) lowestMakita DGA513highest 95dB(A)Bosch GWS 14-125 S

Compare it with: + Bosch GWS 18V-11 + Makita DGA517 + DeWalt DCG406 + Bosch Green PWS 18V-70

Full specs

From Milwaukee's own documentation. Checked 12/06/2026. Report a spec error ›

Disc & Cutting

Disc diameter125 mm

Disc bore22.23 mm

Disc mount systemM14 (Standard)

Spindle threadM14

Voltage18V

Extractor auto-startNo

Year released2021

Safety

Electronic brake✓ Yes

Soft start✓ Yes

Electronic kickback brake✓ Yes

Kickback technologyAnti-Kickback Protection

Overload protection✓ Yes

Tool-free nutFIXTEC (tool-free nut)

Performance

No-load speed8,500 rpm

MotorBrushless

Handle & Control

Switch typeSlide

Side handle✓ Yes

Lock wrench✓ Yes

Physical & Build

Weight (bare)2 kg

Weight (with battery)2.7 kg

Noise level82.6 dB(A) LpA / 93.6 dB(A) LwA

Vibration5.0 m/s²

The verdictOur take

The straightforward 125mm workhorse of the FUEL line: a lock-on slide switch, a fixed 8,500 rpm, and the same RAPIDSTOP brake, Anti-Kickback Protection and FIXTEC nut as the rest of the range. If you grind more than you cut and like locking the switch on, this is the natural pick.

Powered by Milwaukee M18 · 11

All 11 batteries that fit this tool, smallest first. Kits and chargers ›

M18B2 2.0Ah · 36Wh 0.4kg 2.4kg from £56.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18HB3 3.0Ah · 54Wh 0.7kg 2.7kg from £64.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B4 4.0Ah · 72Wh 0.7kg 2.7kg from £57.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B5 5.0Ah · 90Wh 0.7kg 2.7kg from £59.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B5-CR 5.0Ah · 90Wh 0.7kg 2.7kg from £87.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18HB5 5.0Ah 0.79kg 2.79kg No retailer price yet About this battery ›

M18HB5-CR 5.0Ah 0.79kg 2.79kg No retailer price yet About this battery ›

M18HB5.5 5.5Ah · 99Wh 1.1kg 3.1kg from £99.95at Tooled Up + £6.95 delivery View at Tooled Up ›

Tool weight worked out by adding each pack's weight to the bare tool, using the makers' figures. The maker's own with-battery figure can differ slightly. We may earn a commission on retailer links.