Bosch 8.5 Amp 1/2" 2 Speed Hammer Drill features high torque and high speed drilling capabilities, making it ideal for drilling through concrete, wood, and metal. The auxiliary handle with built-in depth gauge securely locks into place and provides consistent drilling depth. The integral slip clutch allows more user security by disengaging the output shaft if the bit gets into a bind situation. The securely clamping 1/2" three jaw chuck is for rugged hammer drilling applications. The dual mode selector converts from rotation only to hammer drill mode. It comes with a 1 year warranty.