If you already own a rotary hammer and are looking for a heavy-duty drill to bore large holes in wood or mix joint compound, consider buying an SDS-Plus chuck adapter (shown in the third photo).

Torque, which refers to the twisting force the drill generates, can range from 500 inch-pounds for lighter duty drills up to ...

If you need to take on the occasional heavier job, you can always rent a hammer drill from a home center ... designed for speed and efficiency on heavy-duty jobs like framing and deck building.