Product Description

Blue-Groove point and cutting edge for faster chip removal, four times faster than standard spade bits
Double-cutting spurs scribe the outside of the hole, reducing breakout
10% larger shank for added durability

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″.
Blue-Groove point and cutting edge for faster chip removal, four times faster than standard spade bits
Double-cutting spurs scribe the outside of the hole, reducing breakout
10% larger shank for added durability
Grooved hex-shank prevents slipping in drill chuck or bit extension
Fits all standard quick change chucks