Irwin 1 3/8" Spade Bit 88822 Pack of 7

* Chamfered cutting edges for increased durability.* Patented Blue Groove parabolic scoop for faster chip removal.* Designed for impact drivers with 1/4" impact rated shank.* Next-generation SPEEDBOR® Spade Bits feature a chamfered cutting edge for durability in cutting wood. 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 Fits all standard quick change chucks