Irwin Speedbor 1 x 4 in. Spade Bit features a Blue-Groove point and cutting edge designed for faster chip removal, enhancing your drilling efficiency. The double cutting spurs precisely scribe the outside of the hole, which helps to reduce breakout and deliver cleaner results. Built with a 10% larger shank, this spade bit offers added durability for extended use. Made from carbon steel, it measures 1 inch in bit size and 4 inches in length, with a 1/4 inch quick change shank diameter. The bit comes packaged individually on a card for easy storage and handling.Model Number: 87916