IRWIN SPEEDBOR Spade Wood Drill Bit Set, 5 Piece (88885)

Set of 5 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 1/4" impact rated shank