These powerful drill bits for cast iron, aluminum, and even stainless steel are made of a steel alloy of 5 percent to 8 ...

DeWalt's drills and their compatible bits are some of the most popular tools on the market, but are the drill bits worth the ...

A counter drill bit set made of high-speed steel is of better quality than carbon steel drill bits. This countersink bit set comprises a mixture of molybdenum or tungsten and alloy metals and can ...

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 ...