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 ¼", ...
Available in sizes from 9/16- to 1 1/2-in. diameter and for holemaking to 2-in. depth of cut Carbide tip cutting edges brazed onto a steel body Dual flat shank Designed for Hougen's portable magnetic ...
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