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

Last twice as long Cut twice as fast Chamfered Cutting Edges for increased durability and longer life Optimized Point Tip to help minimize splintering and control speed Reinforced Shank for fast speeds and aggressive cut Patented Blue-GrooveTM design for fast chip removal Impact Accessible for use with Impact Drivers