The dewalt dcd795 18 volt compact brushless hammer drill driver uses brushless motor technology for excellent efficiency the brushless motor delivers up to 57 more run time over brushed its ultra compact lightweight design allows use in confined spaces the two speed all metal transmission increases runtime and provides a longer tool life compact 78in front to back lightweight 162kg design fits into tight areas high speed transmission delivers 2 speed settings 0 6000 2000 rpm improving speed and