Cobalt High Speed Drill Bits These Straight and Reduced Shank Heavy Duty High Speed 135° Split Point Bits contain 8% Cobalt. The cobalt content adds high abrasion resistance to the bit's hard working properties. Reduction in friction means less heat build up; therefore, they keep their cutting edge and last longer than non-cobalt high speed bits. Cobalt bits produce excellent results when drilling space age alloys such as stainless. Manufactured in the U.S.A.
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