Features: higher torque & faster speed increased productivity. robust design for increased durability. 440nm of deliverable torque in forward & reverse. soft grip handle to reduce vibrations & to enhance user comfort. Specifications: power input 710 watts. Power output 370 watts. No load speed 2200 rpm. Impacts per minute 2700 ipm. Bit holder 1/2 ". Weight 3.2 kg. Length 292 mm. Height 216 mm. Max bolt diameter m 20. standard 1/2 inch ring retainer.