1/2 inch Composite Air Impact Wrench, Air Wrench Mechanism: Twin Hammer Max. Torque: 1000 ft.lb (1 ... ,375 Nm) 1/2 inch Composite Air Impact Wrench (1000ft.lb)Air Wrench, Pneumatic WrenchHandle ExhaustMechanism : Twin HammerSquare Drive : ... 00 kgsLength : 199 mmAir Cons. : 4.6 cfm Air Inlet : 1/4"Air Pressure : 90 psi (6.3 kg/cm2)Soud Pressure ... : 8 pcs/1.28cu.ft/G.W.:19 kgs Air Impact Wrench,