Daredevil(TM) spade bits are designed for professional users seeking speed, ease of use and hole quality. A full-cone threaded tip pulls the bit through the material with less effort and vibration than other spade bits. The contoured paddle delivers faster chip removal; hex shank with power groove reduces slippage. Up to 10X faster than conventional spade bits. Spur and reamer tips for cleaner holes. It provides a cleaner hole quality with reduced breakout. Standard drill bit of 1 1/8'' x 6'' (2.9 cm x 15.25 cm).