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.FeaturesVariable speed control triggerForward/reverse rotationTorque limiter2 mode operationOne touch sliding chuckLock on functionMaximum in concrete: TCT bit 18mm, TCT core 35mm, Diamond Core 65mmMaximum in wood 24mmMaximum in steel 13mm.