Factory-Reconditioned Bosch 11247-RT 1-9/16-Inch 10-Amp Spline Combination Hammer Reconditioned Bosch Products have a One-year warranty through the Bosch factory or an authorized service center 10-amp motor delivers 400 rpm and 3,000 bmp Constant response circuitry maintains speed under load and provides overload protection Vario-lock chuck allows for user positioning of chisel 360-Degree auxiliary handle provides a wide range of movement for user comfort