ITEM NO.:AT-IW01 1/2" Air Impact Wrench Die cast aluminum body.Reversible. Adjustable torque.Rubber scuff guards on nose and back. Built-in air regulator varies speed&power. Ideal for tire changing and general assembling work and other workshop applications. Front exhaust. TECHNICAL DATA Square Drive :1/2" Capacity Bolt Size:5/8"/16mm Free Speed:7,000rpm Max.Torque:230ft-lb/312Nm Air Inlet(PT):1/4" Air Hose(ID):3/8" Avg.Air Consumption:8cfm Working Pressure:90psi . Q'TY:10PCS/CTN N.W.:20KGS G.W.:21KGS MEAS:40.5x39x22.5CM.