Up to 3x faster than a standard drill bit. Threaded tip draws the spade bit into wood with only the lightest pressure from the user, while its paddle design ensures extra speed. Suitable for all types of softwood, offering efficiency and convenience to tradespeople who need to drill through holes or blind holes for cabling, pipes and other hardware installations. 1/4Hex shank for use with three-jaw drill driver chucks and hexagonal drill driver chucks. Suitable for Soft & Hard Wood 10-32mm Dia. Drill Bits High-Speed Steel Self-Feeding Threaded Tip For Use with 3-Jaw Chuck Machines on Rotary Action Up to 3x Faster than a Standard Drill Bit Bosch Tip Technology 1/4Hex Shank Suitable for Soft & Hard Wood 10-32mm Dia. Drill Bits High-Speed Steel Self-Feeding Threaded Tip For Use with 3-Jaw Chuck Machines on Rotary Action Up to 3x Faster than a Standard Drill Bit Bosch Tip Technology 1/4Hex Shank