Irwin Speedbor 1-3/8 x 6 in. Spade Bit features a Blue-Groove point and cutting edge designed for faster chip removal, enhancing your drilling efficiency. Its double cutting spurs precisely scribe the outside of the hole, reducing breakout and ensuring cleaner results. The bit includes a 10% larger shank for added durability, making it a reliable tool for various woodworking tasks. This spade bit measures 1-3/8″ in size, 6″ in length, with a 1/4″ shank diameter, and comes packaged individually on a card for convenient use and storage. Model Number: 88822