A spade bit is flat, with a sharp point in its center ... These are robust steel drill bits, good for drilling into wood, plastic or metal. One downside: At high drill speeds, they can overheat ...

The larger, more prominent tools of the trade tend to come ... like the screw-like ones seen on the Bauer Wood Auger Drill Bit Set or the wide, flat ones on some of the Warrior Quick-Change ...

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 ...