Irwin Speedbor 5/8 x 4 in. Spade Bit features a Blue-Groove point and cutting edge designed for faster chip removal, making your drilling tasks more efficient. Its double cutting spurs scribe the outside of the hole to reduce breakout, ensuring cleaner results. The bit is built with a 10% larger shank for added durability, providing long-lasting performance. Crafted from carbon steel, this spade bit measures 5/8" in size with a 4" length and includes a 1/4" quick change shank for easy swapping. Packaged individually on a card, it is a reliable choice for your drilling needs. Model Number: 87910