BOSCH CO2159B 1-Piece 1/2 In. x 6 In. Cobalt M42 Metal Drill Bit with

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