Irwin Speedbor 88807 Spade Bit 7/16" Pack of 4

* 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.