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Sutton Tools Cobalt Drill Bits
Made from solid cobalt alloyed high speed steel for superior drilling perforance. The cobalt increases the hardness and provides high resistance to abrasion. This type of drill is suited to drilling materials that have high hardness and tensile strength such as cast iron, bronze, weld seams, hardened steel & stainless steel.
Triumph Twist Drill BitsManufactured in the USA and made from industrial grade steel.