Ideal ID HD2-20SE - 20mm Rotary Hammer 2-Speed SDS Plus

A hammer drill, also known as a percussion drill or impact drill, is a power tool used chiefly for drilling in hard materials. It is a type of rotary drill with an impact mechanism that generates a hammering motion. The percussive mechanism provides a rapid succession of short hammer thrusts to pulverize the material to be bored, to provide quicker drilling with less effort. If a hammer drill's impact mechanism can be switched off, the tool can be used as a conventional drill to also perform tasks such as screwdriving.