Irwin Speedbor 5/8 x 16 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, which helps reduce breakout and ensures cleaner results. This spade bit also boasts a 10% larger shank for added durability, making it a reliable tool for your woodworking projects. Crafted from carbon steel, it measures 5/8″ in bit size with a 16″ length and includes a 1/4″ 3-flat shank diameter for secure fitting. Packaged individually on a card, this spade bit is a durable and efficient choice for your drilling needs.Model Number: 88710