Award-winning Nail Chipper auger bits utilize a Tri-Cut design to chip away at nails in studs and other framework, leaving a cleaner hole for conduit, wiring, etc. Safer to use when encountering fasteners by nearly eliminating kick-back encountered with traditional ship augers. Lightweight design extends tool and battery life. Easily resharpened. 7/16" quick-change shank. 18" OAL. 1-1/16" DIA.