DEWALT Extreme Tri-Flute Spade Bits with 3 cutting edges for up to 6x faster cutting, combined with a tri-flute for optimum chip removal and less binding. There are 3 cutting spurs for cleaner and faster holes, the spurs also extend drilling life. Its full screw tip allows the bit to self-feed, for ease of use and pull through.Fitted with a quick-change shank, fits standard quick-change extensions and 1/4in hex bit adaptors. For use with corded and cordless drills. Suitable for drilling holes in wood up to 100mm deep. Ref: UTTK7243