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:CLF3000HHDrive Size:4mm Hios Dr.Range: 3 - 15 cN.m ,0.3 - 1.3 lbf.in, 0.3 - 1.5 kgf.cm.Tool Weight:14.1 oz.Tool Length:7.25RPM High:1000RPM Low:560Grip Dia:1 1/4"