3/16" x 4" Carbide Tipped Masonry Drill Bit, Drill America, DAM4X3/16

Carbide-tipped tools feature cutting edges of carbide for wear resistance and a steel shank for toughness Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge Round shanks allow use with a wide variety of toolholding systems When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging Designed for use in portable electric drill