Chisel-Point Spade Bit Set features bits with sharp chisel-point tips and precision-ground cutting spurs to deliver aggressive drilling through wood. High-speed steel bits are hardened and tempered for a long service life and edges that stay sharp longer. Precision-ground spur tips – score the outer edge of the hole for cleaner, smoother drilling. 1/4" Quick-change hex shank with power groove reduces bit slippage in a variety of drill types. Sizes clearly marked for easy identification. Includes: 3/8 In, 1/2 In, 5/8 In, 3/4 In, 7/8 In, and 1 In. spade bit.