High Performance with Brushless Motor - Reverse Rotation Auto Stop Mode Stops Rotation and Impact in 0.2 Seconds when Fastener Is Loosened Adequately to Prevent Bolt/Nut Get Lost - A maximum tightening torque of 280 N.m (207 ft.lbs) - Compact design with a short overall length of 147 mm - The power remaining in the battery can be indicated in 3 stages simply by pushing a button - Electronic 3 stage impact power selection Note Tool only (without Batteries & charger) Fastening Capacities / Standard Bolt: M10 - M20 (3/8" - 3/4") / High Tensile Bolt: M10 - M16 (3/8" - 5/8") Square Drive / 12.7 mm (1/2") No Load Speed (RPM) / Hard / Medium / Soft: 0 - 2,800 / 0 - 2,100 / 0 - 1,600 Impacts Per Minute (IPM) / Hard / Medium / Soft: 0 - 3,500 / 0 - 2,600 / 0 - 1,800 Max Fastening Torque / 280 N·m Dimensions (L x W x H) / 147x79x249 mm Net weight / 1.8 kg Available Variants: Tool only ( Does not include battery / charger / carry case )