The DEWALT DCF923 XR Impact Wrench has an efficient brushless motor and 3/8in square drive with hog ring for quick socket changes. Its variable speed trigger provides complete control over all applications and tactile 4-mode select feature, a selection of different modes and speed settings for ultimate performance. * Mode 1 Low Speed: tool operates at a reduced speed and outputs approximately 160Nm, reverse tool operates at normal speed. * Mode 2 Mid Speed: tool operates at a reduced speed and outputs approximately 400Nm, reverse tool operates at normal speed. * Mode 3 High Speed: tool operates at normal speed, reverse tool operates at normal speed. * Mode 4 Precision Wrench: tool pauses before impacting to help prevent over-tightening, reverse tool lowers speed when fastening is loose to help prevent run-off. Its ultra-compact design enables easy access in confined areas. Fitted with a comfortable rubber XR grip and switch for greater application comfort and maximum control. An ultra-bright white LED work light with a delay feature improves visibility. Brightness control allows dimming or turn off to suit the working conditions. Supplied as a Bare Unit - No Battery or Charger. Specifications: Bit Holder: 3/8in Hog Ring. No Load Speed: 2,500/min. Impact Rate: 3,600/bpm. Max. Fastening Torque: 406Nm. Nut Busting Torque: 610Nm. Weight: 1.1kg (without battery).