Professional repairmen and DIYers know how important and vital a drill set is. But most of the time this type of power tool ...

There are three tool options to consider when drilling large-diameter holes in thick steel: twist drill bits, hole saws and annular cutters. 1. Twist drill bits. Especially in steel thicker than ...

This low-priced sharpener puts a fresh 118-degree grind on any old, dull drill bit. The diamond sharpening wheel works with standard 3/32-inch to ½-inch twist drill bits made of any material.

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 ...