SP Air Corporation SP-1158 Heavy-Duty Impact Wrench, 3/4" 1,200 ft./lb. Max Torque, higher torque for stubborn fasteners and lightweight aluminum housing weighing 15 lbs Regulator system allows mechanics to maintain full power in multiple directions Handle Air Exhaust directs air flow away from work and reduces noise level Sealed-in oil bath lubrication always keeps impact mechanism lubricated for less wear and longer tool life Made in Japan