IRWIN Impact TURBOMAX® bit minimizes walking, delivers 10X faster starts, and stays sharp longer • The Fastest Speedbor ever • Tri-Flute design for faster chip ejection • Cutting spurs have 3 cutting edges for added durability • Full screw tip allows bit to self feed • Grooved hex shank prevents slipping in drill chuck or bit extension • Fits all standard 1/4" quick change chucks
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