The dewalt d25134k hammer drill is ideal for drilling anchors and fixing holes into concrete and masonry from 4 to 26 mm in diameter featuring the mechanical clutch which eliminates sudden high torque reaction should the bit jam and the electronic variable speed for total control in any application this 3 mode hammer drill features a quick change removable chuck for drilling in wood steel ceramic and screwdriving applications and a rotation stop for light chiselling applications in brick so