Powerful 470W motor, delivering up to 2100rpm and 4800bpm. The torque limiting clutch is engineered to prevent gear damage by automatically disengaging the gears if the bit binds. 2-mode operation, rotary only and rotary hammer. One-touch sliding chuck for easy bit changes and depth gauge for increased drilling consistency. Features Variable speed control trigger Forward/reverse rotation Torque limiter 2 mode operation One touch sliding chuck Lock on function Maximum in concrete: TCT bit 18mm, TCT core 35mm, Diamond Core 65mm Maximum in wood 24mm Maximum in steel 13mm