Features: The New Bosch 1191VSRK 1/2-inch VSR hammerdrill has a powerful 8 amp reversing motor and an ergonomic design engineered to provide the highest performance to weight ratio in its class. Use the selector lever to choose the hammerdrill or drill only for steel, wood, or aluminum. 2-Speed Gear Box matches speed and torque to the job. Dual-Mode Selector easily converts from rotation-only to hammer drill mode. Variable Speed Reversing Switch complete control for drilling, driving and removing bits or screws. All Ball and Roller Bearing Construction smooth power transmission and extended tool life. Ergonomic handle multiple gripping positions for increased comfort and control. 360° Side-handle with depth gauge, wide range of movement for comfort along with consistent drilling depth. Lock-on button.