AIR NUT REMOVAL 1/2 1756 NM DOUBLE HAMMER 1,91 Kg 1/2" Impact Wrench Features: Composite Motor Housing Twin Hammer Thumb-Operated Forward and Reverse Switches Provide One-Handed Operation Variable Speed ​​Trigger model number. Free Speed (RPM) Anvil size inch (mm) Relaxation Torque (Max.) ft-lbs (Nm) Maximum Torque ft-lbs (Nm) Working Torque Range ft-lbs (Nm) Air intake (NPT) Hose Size ID inch (mm) Average Air Consumption CFM (L/Min) Length inch (mm) Weight lbs (Kg) SM-43-4134P 8,000 1/2 (13) 1,300 (1,756) 820 (1,112) 50-580 (68-786) 1/4" 3/8 (10) 4 (113) 7.4 (187) 4.21 (1.91)