Irwin 1 1/8" Speedbor Standard Length Speed Bit has a Blue-Groove point and cutting edge for faster chip removal that is 4 times faster than standard spade bits. The double cutting spurs scribe the outside of the hole which reduces breakout. Has a 10% larger shank for added durability and the grooved hex shank prevents slipping in drill chuck or bit extension. Diameter is 1 1/8", shank length is 6", and shank size is 1/4". Fits all standard quick change chucks.
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