The dewalt dcf899 xr brushless high torque impact wrench with 3 speed and torque settings that gives you the control to best suit your application the 12in 13mm square drive with detent pin allows for more efficient torque delivery and excellent socket retention it is fitted with a comfortable rubber xr grip and switch for greater application comfort and maximum control it has a powerful fan cooled motor that delivers up to 950nm of torque and 2400 impacts per minute for heavy duty fastening app