Professional 11 mm cobalt metal drill bit from IRWIN is made from HSS steel with 5% cobalt content for high heat resistance, fast drilling, and long service life. Ideal for mild and high-alloy steels, cast iron, and non-ferrous metals.
The IRWIN 11 mm HSS cobalt drill bit delivers top performance when drilling demanding materials. The alloy with 5% cobalt increases hardness and edge retention even at higher temperatures, enabling stable and efficient work with reduced tool wear.
Thanks to optimized geometry, it provides clean holes, higher cutting speed, and smooth feed. Suitable for professional workshop use as well as demanding DIY projects.
