Ideal for drilling anchor, fastening and through holes from 12 to 52 mm in masonry and concrete Box drill bits up to 150 mm.Rotary stop for demolition work in stone and masonry and light trench chiselling in concrete.The Active Vibration Control system with a vibration damping counterweight and a floating handle reduces vibration to an extremely low level.Electronic control of the speed and impact energy.Switch lock for chiselling work.Service and carbon brush wear indicator.The UTC electronic anti-rotation system detects when the machine is spinning if it should get caught in the material The machine then virtually stops to protect the user.