Set of 50 M35 cobalt drill bits - 1-3 mm - For drilling on hardened steel, cast iron and stainless steel

50pcs M35 Metric Cobalt Steel Twist Drill Bits Set: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 10pcs of each drill bit.

For stainless steel - Particularly effective for cutting hard metals such as stainless steel and cast iron, although they are used for softer materials..Not suitable for hardened steel/steelto carbon... Try to adjust speed if penetration is incorrect.

No crane - 135° cutting tips are self-centering and penetrate quickly with less pressure

M35 Cobalt Steel - Made from M35 cobalt steel with molybdddn and cobalt additives to achieve an alloy with a Rockwell hardness up to 67 that cuts up to 2 times faster than average HSS drill bits and a longer lifelonger.

Be careful when piercing shrimp with these small needle parts.They are more likely to break than raw ones.