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..