Bosch Electric Rotary hammer

A typical electric rotary hammer has a multi-mode selector, making it a highly versatile tool:

1. Drill Mode: The tool acts like a standard drill, rotating the bit without the hammering action. This is used for drilling into wood, plastic, or metal.
2. Hammer Drill Mode (Rotary Hammer): This is the most common mode. The bit rotates while the hammering mechanism is active, allowing it to efficiently bore holes into concrete, brick, and stone.
3. Hammer-Only Mode (Chiseling): The rotation is deactivated, and the tool functions as a small jackhammer. This is used with chisel or point attachments for light demolition work, such as removing tiles, breaking up small concrete slabs, or chipping away mortar.