MAKITA CANADA INC. D-30019 2-1/8" SELF-FEED BIT 7/16" HEX

2-1/8-inch Self Feed Bit. Outlining spurs accurately define hole diameter. Threaded screw point pulls the bit into the work providing a fast and easy to use self feeding action. Heavy duty 1/2-inch shanks have three milled flats for secure gripping by drill chuck. For use by plumbers, electricians and other tradesmen for boring holes for pipe and conduit installation in wood.