5/16" COB Drill Bit Constructed of M-42 5% cobalt high speed steel for super abrasive resistance on rigid metals. Heavy duty spiral flute design produces faster chip ejection. Shorter cutting tips reduce torque for drilling in high tensile strength materia
5/16″ COB Drill Bit Constructed of M-42 5% cobalt high speed steel for super abrasive resistance on rigid metals. Heavy duty spiral flute design produces faster chip ejection. Shorter cutting tips reduce torque for drilling in high tensile strength materials. Reduces 135 degree split point feed pressure for easy penetration without work quenching.
$25
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