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Bosch - CO2135B Cobalt M42 drill bit provides upgraded M42 cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
Enhanced M42 alloy material contains 8% cobalt alloy that delivers 10X life vs. standard bits
High-heat resistant bits withstand high-temperature applications for extended periods of time
Thick web-helix design provides additional stability in tough applications
Surface-hardened tip penetrates tough abrasive materials
Split points on bits 1/8 In. and larger allow for easy starts with no skating, eliminating the need for a center punch
Heat-treated manufacturing process helps to ensure the strength of bits