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Product Description
Bosch - CO21B (2) 1/16", (2) 5/64", (1) 3/32", (1) 7/64", (2) 1/8", (1) 9/64", (1) 5/32", (1) 11/64", (2) 3/16", (1) 13/64", (1) 7/32", (1) 15/64", (2) 1/4", (1) 5/16", (1) 3/8", (1) 1/2"
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
Three-flat shank on bits 3/16 In. and larger deliver better bit grip