A drill bit is a rotary cutting tool that makes ... Holes larger than an inch require a spade bit or hole saw. A spade bit is flat, with a sharp point in its center and material flaring out ...

Twist drill A standard drill bit with two twisted, fluted cutting edges to remove material Wood Flat drill Has a flat face, a pin at the bottom, and two cutting edges. Allows for a flat blind hole ...

Learn how to use a screw extractor, and no broken or stripped fasteners will ever slow down a DIY project again.