Irwin Speedbor 3041003 Speed Bit Set, Tri-Flute Flute, Hex Shank

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Tri-flute design for faster chip ejection cutting spurs have three cutting edges for added durability. Full screw tip allows bit to self-feed. Grooved hex shank prevents slipping i n drill chuck. Fits all standard 1/4 in quick change chucks. Includes one each 5/8 in, 3/4 in, 1 in and case. Tri-lobe design helps provide a secure grip for ease-of-use Cutting spurs have three cutting edges for added durability The material is rendered from the hearty shin bone of Zebu cattle, a substance tough enough for the rigors of case knife demands Full screw tip allows bit to self-feed Grooved hex shank prevents slipping in drill chuck or bit extension Fits all standard 1/4 in quick change chucks Show more