This Masterforce® Full Boar™ threaded spade bit is impact rated with a patented threaded tip that pulls the bit through wood or plastic to deliver up to ten times faster drilling than conventional spade bits. The threaded tip self-feeds into wood or plastic for fast, effortless drilling. The dual cutting spurs provide clean holes and reduce breakout. This bit is made of high carbon steel for durability and is black oxide coated to provide protection from water damage, rust, and corrosion. It is commonly used by electricians and plumbers for drilling holes in studs in walls for running wiring or pipe.