For example, a dowel drill uses percussion-style drilling, meaning the drill steel used to chip through the concrete applies a hammer-type action. “This causes vibration in the drilling unit ...

Hammer drills and rotary hammers are both excellent for drilling masonry. Rotary hammers are more powerful, though, and have ...

Unlike regular drills, hammer drills combine rotary drilling with a hammering action, making it easier to drill into tough ...