Single Flute 90 Degree

A common use is to allow the head of a countersunk bolt, screw or rivet, when placed in the hole, to sit flush with or below the surface of the surrounding material - Also used for chamfering or lite deburring Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastic and other tough-to-machine materials. Sizes 1/4" and under are Solid Carbide Heads and Shanks - Over 1/4" - Carbide Heads Brazed on a High Speed Tool Steel Hardened Shank Can be used in hand drill or machine - Watch Yours speeds on this type tool - Slower is usually better