A powerful Draper air impact wrench with a 1/2\" square drive This Draper Expert quality Air Impact Wrench has low noise, low vibration,a high torque twin hammer action, with easy forward and reverse one-hand operation. Rotating air inlet prevents airline tangling. The composite body of the Draper Air Impact Wrench makes this a lightweight but rugged tool that reduces operator fatigue and the \'cold sink\' effect. Sold in a cardboard box. Features: Low noise, low vibration Lightweight but rugged tool High torque twin hammer action Rotating air inlet prevents airline tangling Specification: Ultimate torque: 813Nm (600ft/lb) Free speed: 7,000 rpm Operating air pressure: 90psi (6.2bar) Average air consumption: 4.4cfm (125L/min) Vibration level: 2.8m/s2 Min. hose size: 3/8\" (10mm) Air inlet: 1/4\" BSP Weight: 2.2kg