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The Milwaukee M12 FUEL 3/8-inch Subcompact Impact Wrench is a 12V cordless impact wrench built for tight spaces, especially under the hood. It measures 4.5 inches long and 2.0 inches wide and weighs 1.6 lbs as a bare tool, so it slips into engine bays where full-size wrenches will not fit. With the included HIGH OUTPUT CP2.5 battery it delivers up to 225 ft-lbs of nut-busting torque, and the 4-Mode DRIVE CONTROL adds a 15 ft-lbs AUTO SHUT-OFF for hand-tight work plus a reverse bolt-removal mode that slows once the bolt breaks free. It competes with other subcompact 3/8-inch impacts on size and weight; its edge is the compact head and mode control, while its limit is torque next to larger 18V tools.
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Lowest price we've seen: $339.95 on Nov 13 at Amazon. Tracked across 2 stores since Nov 13.
Owners of the M12 FUEL subcompact impact wrench generally praise its size and weight for underhood work and its smooth power delivery. Many say it handles most automotive fasteners and reaches places larger wrenches cannot. Some note it is not a substitute for a high-torque 18V tool on stubborn bolts.
The Milwaukee M12 FUEL 3/8-in. Subcompact Impact Wrench is a compact cordless impact wrench for automotive work. It measures 4.5 in. long and 2.0 in. wide, so it fits into tight spots under the hood without extensions, swivels or adapters. As a bare tool it weighs 1.6 lbs. A friction ring holds the socket in place, which cuts downtime when you change accessories often.
It delivers up to 225 ft-lbs of torque when paired with an M12 REDLITHIUM HIGH OUTPUT CP2.5 battery pack. A Tri-LED work light lights the work area with fewer shadows. A variable speed trigger and 4-Mode DRIVE CONTROL let you adjust speed and power output.
In forward mode, auto shut-off limits torque to 15 ft-lbs for hand-tight jobs and helps prevent overtightening. In reverse, the bolt removal mode slows the RPM once the bolt is free, so the fastener doesn't drop. To change modes with one hand, put the forward-reverse shuttle in neutral and double-tap the trigger.





