Create an undersized hole so concrete tapping screws fit tightly once they're threaded into place. These bits are slightly smaller than the matching screw size. They have a carbide tip that resists wear and heat to stay sharp.

Crush rather than cut material so bits don’t jam or overheat while drilling masonry and concrete. The ultra-hard carbide tip breaks masonry into pieces and the widely spaced flutes channel them out of the hole. These bits stay sharp, resisting wear and heat that will dull or break other bits.

Prevent frequent stops to clear bits and reduce heat buildup that can damage them. The tight spiral flutes lift dust and debris out of the hole more quickly than standard masonry bits. These bits are especially effective for brittle material that creates a lot of debris, such as block and brick. The carbide tip resists wear to stay sharp