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7/16 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 - 7/16 Irwin Speedbor Spade Bit