tender for 1 inch square drive heavy duty long anvil impact wrench, working torque range: 550ft.lbs/750 nm (or less) to 1150 ft.lbs/1550 nm (or more) . max torque range: 1400 ft.lbs /1900 nm (ormore) free speed 4000 rpm (or more), weight 09 kg (maximum), length 16 inch to 19 inch maximum, air inletsize 1/2 inch npt. make: sioux (snap-on) / ir / wright tool/armstrong.warrantee/guaranteecertificate to be submitted along with supply. note:for use to fit/tight of bolt of axle wheel & motor assly ofbogies.