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 14-piece set includes sizes ranging from 1/16 inch to ⅜ inch. In testing, the stepped split pilot point allowed the ...

The bits range in diameter from 1/16-inch to 1/2-inch and feature durable M42 cobalt construction for superior performance and longevity. The DeWalt Fully-Automatic Cordless Metal Drill ...

Certainly one of these bits can bore through framing lumber, especially when chucked into a ½-inch drill ... electricians. Its large center screw pulls the bit into thick wood, hence its name.