- Suitable for alloyed and non-alloyed steel up to a tensile strength of 1000 N/mm², stainless steel V2A/V4A, cast iron, cast steel, acid and heat-resistant steels- Precision drill bits that are resistant to heat and wear- For use in drill stands or in pillar drills- The HSS-Co drill bits are available in two qualities. The Topline drill bits are for the highest requirements and the standard drill bits are for professional use
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