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The Milwaukee 2658-20 is a compact cordless 3/8-inch impact wrench built on the M18 18V battery platform. Its 4-pole frameless motor and optimized impact mechanism deliver up to 167 ft-lbs of fastening torque, 2,450 RPM and 3,350 IPM, which Milwaukee claims is the most powerful in its compact class. A friction ring anvil allows fast tool-free socket changes, and an LED light plus an all-metal reversible belt clip round out the tool. It suits mechanics and tradespeople who want a light, one-handed wrench for engine bay, suspension and assembly work, and it competes with compact 3/8-inch impact wrenches from DeWalt, Makita and Bosch that trade some torque or size for their own battery ecosystems.
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Lowest price we've seen: $75.99 on Nov 12 at Amazon. Tracked across 16 stores since Nov 12.
Rated 4.8 out of 5 from 37 ratings, owners consistently praise the power and compact size for the class. Most use it as a go-to for automotive and assembly work and value the friction ring and light.
The Milwaukee M18 3/8-in. Impact Wrench is a cordless compact impact wrench in the M18 line. It runs on an 18V battery system and has a 3/8-in. friction ring anvil, which allows tool-free socket changes.
It uses a Milwaukee-built 4-pole frameless motor and an optimized impact mechanism. It delivers up to 2,450 RPM, 3,350 IPM and 167 ft-lbs of fastening torque. REDLINK Intelligence uses communication between the tool, battery and charger to optimize performance and protect against overload.
An LED light illuminates the work surface. The wrench also includes an all-metal, reversible belt clip for temporary tool storage.
