Impact-rated with ¼" hex shanks, making them suitable for use in impact drivers as well as all standard drills with a jawed chuck. 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. For use with corded and cordless drills. Suitable for drilling holes in wood up to 100mm deep. Suitable for Soft & Hard Wood 13-32mm Dia. Drill Bits Steel Self-Feeding Threaded Tip Can be Used with Rotary & Impact Modes Tri-Flute Tapered Design Impact-Rated Quick-Change Shanks Suitable for Soft & Hard Wood 13-32mm Dia. Drill Bits Steel Self-Feeding Threaded Tip Can be Used with Rotary & Impact Modes Tri-Flute Tapered Design Impact-Rated Quick-Change Shanks