Irwin Tools 1792761 Speedbor Blue-Groove Pro Spade Bit Set with Storage Case, 17-Piece
IRWIN Tools 1792761 Speedbor Blue-Groove Wood Spade Bit Set, 17-Piece With Storage Case, provides every size standard length Speedbor spade bit in a durable storage case. IRWIN Blue-Groove Spade drill bits feature a patented Blue-Groove Point and cutting edge for faster chip removal and drilling speed. Double cutting spurs scribe the outside of the hole reducing breakout and delivering cleaner holes when through-hole drilling or countersinking. Plus, the bits have a thicker cutting edge and larger shank for improved durability and a longer cutting life. The 1/4" quick-change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks, including impact drivers. This bit set comes in a durable molded plastic case for convenient storage and portability, and includes standard length bit sizes 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1-1/8", 1-1/4", 1-3/8", and 1-1/2".