The dewalt dc901m2 cordless hammer drill driver is a powerful combination tool for heavy duty hammer drilling and screw driving applications it has three speed settings for optimum performance in high torque normal use and high speed applications it has a 22 position adjustable torque control for uniform results and optimised precision when screw driving the 13mm all metal ratcheting keyless chuck offers superior bit grip strength the ergonomically designed trigger and anti slip comfort grip pro