Self-feed Wood Bits, 18 in

Features: For drilling large diameter holes in wood for pipe, conduit and other applications | Replaceable coarse screw point drills quickly in dry, wet, and gummy wood | All bits have a 7/16" hex quick change impact shank that fits 1/2" or larger electric drills or 7/16" hex impact wrench drills | Precision milled shank eliminates runout and wobble | Forged in one piece from high carbon steel for maximum strength under tough drilling conditions | Ideal for pipe and conduit systems