The Wood Owl Nail Chipper is an 18 in Tri-Cut auger bit made to keep boring when it hits a nail. We carry it in 16 diameters from 3/8 in to 1-1/2 in.
It has three ground cutting edges and three flutes and no spurs, so a nail gets cut down to chips instead of stopping the bit. The Tri-Cut head balances the bit as it cuts and cuts down on kickback, and the lead screw pulls it straight through the work. The bit is fully induction-hardened high-carbon steel with a PTFE coating that cuts friction and clears chips in sticky wood. It has a 7/16 in quick-change hex shank for cordless drills and also works in a hand brace. It can be resharpened and comes in a plastic storage tube.
Wood Owl has made drill bits in Miki, Japan since 1923.