Heavy Duty Pneumatc Impact Wrench Square Drive 3/4", Free Speed 5000-5500 Rpm, Workin G Torque(Forward) 400-1500 Nm (Tolerance +/- 10%), Maximum Torque(Reverse) 1750 Nm(Tolerance +/- 10%), Air Inlet Hose Size 1/2" @ 90 Psi. Make : Chicago Pneumatic / Bosch /Desoutter Germany /Fuji Japan /Atlas Copco India Makes Only. [ Warranty Period: 30 Months After The Date Of Delivery ] ]