SCREW DRIVER TW-6PD Specifications SPECIFICATIONS Model TW-6PD Driver Chuck Hex. (in) 1/4 Bolt Cap (mm) 8 Max Torque (kg.m) 20 Net Weight (kg) 1.4 Overall Length (mm) 1.5 Free Speed (rpm) 7,550 Ave. Air Consumption (m³/min) 0.2 Air Inlet (pt) 1/4 Hose Size (in) 3/8