The impact drill has a built-in ratchet-controlled impact mechanism, which produces striking motions in addition to the rotation of the drill bit. This makes the impact drill particularly suitable for drilling in masonry. By increasing the feed pressure, it is also possible to drill in concrete with an impact drill. Therefore, the impact drill – in contrast to the rotary hammer – is dependent on the feed pressure applied by the user. Furthermore, an impact drill can also be used to drill and drive screws in wood when the impact mechanism is switched off.