Blue-Groove point and cutting edge for faster chip removal - 4x faster than standard spade bits
Double cutting spurs scribe the outside of the hole reducing breakout
10% larger shank for added durability
Grooved hex shank prevents slipping in drill chuck or bit extension
Includes an IRWIN Pro Set Case made of durable molded ABS resin, so it can hold up to anything the jobsite throws at it. Case includes a full-length metal hinge pin for maximum durability and long life, and bit identification is simple with easy-to-read size markings.