Bosch Cobalt M42 Metal Drill Bits are engineered with an upgraded M42 alloy, containing 8% cobalt. These hard-core cobalt bits deliver 10X life vs. standard bits and are designed for high heat resistance.
Designed for durability and with high heat resistance for use in stainless steel, cast iron, titanium, light-gauge metal and aluminium.
Fast, accurate starts reduce bit walking on material surface.
10X longer life than standard Cobalt drill bits.
Fast material removal and increased stability.








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