IRWIN 1/2 COBALT DRILL BIT

14 piece, cobalt metal drill bit set, sets consists of: 1/16", 5/64", 3/32", 7/64", (2) 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8" & 1/2" bits, manufactured from cobalt for drilling in hard & abrasive materials, no-skate tip for clean & accurate starts, 3 flat shank promotes better grip on bits 3/16"& larger, designed for very high drilling temperatures for superior performance in stainless steel, high visibility marking provide clearly marked diameter.

Bosch Cobalt M42 Metal Drill Bits are engineered with upgraded M42 alloy, containing 8% cobalt. These hard-core cobalt bits deliver 10X life vs. standard bits, are jobber length and withstand high-heat applications. The thick web-helix design delivers fast material removal and increased stability. Bits that are 1/8 In. and larger feature a split point; bits 3/16 In. and larger feature a three-flat shank, for better bit grip. These cobalt drill bits provide superior performance in stainless steel and can be used to drill cast iron, titanium and other hard or abrasive metals.

COBALT BIT 135SP 1/2