5/16" Irwin Speedbor Spade Bit (88805)

5/16" Diameter
6" Shank Length
1/4" Shank Size

Blue-Groove point and cutting edge for faster chip removal - 4x 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 - 5/16 Irwin Speedbor Spade Bit

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