The HIOS CLF-Series is designed for robotic and automated applications. The durable robotic screwdrivers deliver reliability and precision torque. Ensures accuracy in fastening with precision automatic shut-off clutch once preset torque is achieved. Requires a Transformer (power supply).Model:CL816AXHDrive Size:1/4" F/HexRange: 150 - 250 cN.m ,13.2 - 22 lbf.in, 15 - 25 kgf.cm.Tool Weight:45 oz.Tool Length:9.5RPM High:550RPM Low:310Grip Dia:2"