Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? To make a hole in masonry and rock, you need a masonry bit—and to know how to use it ...

I broke two bits drilling holes in my garage floor with a rented hammer drill. What did I do wrong? David D., Boise, Idaho The most obvious possibility is that you hit a piece of rebar, or reinforcing ...