The Bosch RH1255VC 2in. SDS-max rotary hammer has Turbo Power, which gives the tool a torque and speed boost in hammer mode. It also provides 14.1 ft.-lbs. of impact energy for top-rated power. At under 27 lbs., it has outstanding performance-to-weight ratio in a 2 In. hammer. It features Vibration Control for additional operator control while mitigating vibration in the hammer mechanism and in the handle. This hammer provides Constant Response circuitry for smooth starts, precise hole placement and constant speed under load. Vario-Lock positioning permits rotating and locking the chisel with precision. And the SDS-max bit system provides tool less bit changes.