IRWIN SPEEDBOR Spade Wood Drill Bit - 6Piece

Set of 6 Common Sizes Drills holes 2X faster More Holes Less Time Lasts 2X Longer to get more done Chamfered cutting edges for increased durability Patented Blue Groove parabolic scoop for faster chip removal Designed for impact drivers with 14 impact rated shank Drill bits feature a BlueGroove point and cutting edge for fast chip removal Spade bits use doublecutting spurs that scribe the outside of the hole reducing breakout Flat drill bit design features a large shank for added durability Grooved hex shank helps prevent slipping in the drill chuck or bit extension Drill bit set includes 38 12 58 34 78 and 1 drill bits