Ingersoll-Rand 236G Edge Series Air Impactool Silver, 1/2" Vsr"Ingersoll Rand" Air Impact Wrenches 1 2" Vsr Edge Series Variable reversible speed with aluminum housing A working torque of 25 200 (ft. lb.) and a max. Torque of 450 (ft. lbs.), ergonomic grip and handle exhaust. Specs: drive is 1 2" (square), no load speed is 7,400 RPM Average air consumption (CFM) is 4. 3 CFM at Load 24, inlet size is 1 4", min. hose size is 3 8", noise level is 90. 3 db Weighs (lbs.) 5. 3 lbs and is 7 1 8" long.