Impact Wrench
Affiliate link — we may earn a commissionAn impact wrench uses the same hammer-and-anvil mechanism as an impact driver but with a square drive (1/4, 3/8, or 1/2-inch) instead of a hex collet. It's designed for socket work: lug nuts, suspension bolts, lag bolts, and structural connections. Cordless 1/2-inch impact wrenches deliver 700 to 1,400 ft-lbs of breakaway torque, enough to remove lug nuts on trucks and heavy equipment. 3/8-inch models are lighter and fit tighter spaces for engine work. Don't confuse an impact wrench with an impact driver. The driver takes hex bits and drives screws. The wrench takes sockets and removes bolts.
Why It Matters
A cordless 1/2-inch impact wrench removes lug nuts in 2 seconds that take 30 seconds with a breaker bar. For anyone doing tire rotations, brake jobs, or suspension work at home, it's the single biggest time saver you can buy. The 3/8-inch version handles most engine bay fasteners. Size up if you work on trucks.