Bosch CO21B 21 Pc. Cobalt M42 Drill Bit Set
by Bosch
- Cobalt M42 drill bit-provides upgraded M42 Cobalt jobber-length bits designed for durability, heat resistance & Hardened surface for stainless steel, cast iron, titanium, light-gauge metal & 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