IVY Classic 01928 7/16 x 5-1/2-Inch Brad Point Drill Bit, High-Speed Chrome Vanadium Steel, 1/Tube Ideal for accurate precision holes across the grain for doweling and cabinetry, Premium Swift Bore (Registered Trademark) Brad point centers the bit while the two spurs cut a true hole outline in hard and soft woods Precision ground, bright finish Heat-treated and tempered high-speed chrome vanadium steel Diameter: 7/16-inch, Length: 5-1/2-inch