The Bosch Spline/Round Combination Hammer features vibration control in the hammer mechanism and grip area for excellent comfort during extended periods of use. The turbo power features provides 20% more power in hammer-only mode. The integral clutch disengages torque transmission if the bit gets into a bind situation. The hammer also features a variable speed dial to ensure the maximum speed and power during every use. Includes: auxiliary handle and carrying case. ADDITIONAL SPECIFICATIONS: Rating: 120V; Amperage: 13.0; No Load RPM: 170-340; No Load BPM: 1,700-3,900; Impact Energy (ft.-lbs.): 6.5 EPTA; Maximum Capacities COncrete: 1-5/8"; Maximum Capacities Concrete Thru Hole Bit: 2-9/16"; Maximum Capacities Concrete Core Bit: 4-1/8"; Optimal Concrete Capacity Range: 1/2" - 1-7/16"; Length: 19.25"; Weight: 15.0 lbs.