Description: ½ ″ professional impact wrench has a durable compact twin hammer mechanism, high torque, is powerful and is lightweight. Other features include durable composite housing with steel hammer case, push button forward/reverse for single-hand operation, ergonomic handle design with nonslippage rubber sleeve for a natural and comfortable grip and two years' warranty with normal operation and lubrication. Specifications: square drive - ½ ″; bolt capacity - 5/8″ (16 mm); working torque - 450 ft-lb (62 kg-m); max torque - 500 ft-lb (69 kg-m); free speed - 7000 RPM; air consumption - 24 CFM; air inlet - ¼ ″; air pressure - 90 PSI. overall length - 175 mm; net weight - 2.4 kg; air hose - 10 mm; and ″packing - 10 pcs/ ctn/24 kg/25 kg/1.3'.