1" Heavy Duty Pneumatic Impact Wrench Pinless hammer mechanism Super power for car tire maintenance & assembly line Square Drive (inch)Capacity Bolt SizeFree Speed (r.p.m)Max. TorqueOverall LengthAir Inlet (PT)Air Hose (I.D.)Net WeightPacking Pcs/Ctn/Cuft’inchmmft-lbN.minchmmlbskgs1"1.774540001912260021.265401/2"1/2"28.7313.002pcs/ctn/1.66’ 1" Heavy Duty Air Impact Wrench