Hammer Drills are also called Rotary Drills, Rotary Hammers, or SDS Drills. If you plan on staying at this house for awhile, I'd invest in a cheap hammer drill to keep on hand.

Ours got jammed up, could not free it, so we replaced it with a slightly bigger one. Pulled the old one apart to find a bolt wedged in it, really not sure how that got in there, thought maybe it came out of the disposal but nothing felt loose.