This Powerplus 650w POWX0260 hammer drill, with a self-tightening peacock chuck, can drill holes up to 25mm in diameter in wood and up to 13mm in steel or concrete. _x000D_ In order to select the optimum speed, the adjustment knob can be set0 to 3000 min-1, both for drilling and for drilling with percussion. _x000D_ In addition, the drill ensures powerful drilling in hard materials