Irwin Speedbor 1-1/2 in. X 4 in. L Carbon Steel Wood Boring Bit Quick-Change Hex Shank 1 pc

Last twice as longCut twice as fastChamfered Cutting Edges for increased durability and longer lifeOptimized Point Tip to help minimize splintering and control speedReinforced Shank for fast speeds and aggressive cutPatented Blue-GrooveTM design for fast chip removalImpact Accessible for use with Impact Drivers