50Pcs Drillforce M35 Cobalt Drill Bit Set,Hss-Co Drill Set 1-3Mm,for Drilling On Hardened Steel, Iron&Stainless Steel

No Punch Needed - the 135° quick-cut points are -centering and penetrate quickly with less pressure. not "" or "wander" For Stainless Steel - Particularly successful in cutting through hard metals such as stainless steel and iron, although they can be used for softer materials, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate. M35 Cobalt Steel - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened , measuring hardness up to 67, for much faster cutting and extra life span, with up to when compared with an average HSS drill bit. 50pcs Set - The set includes 50pcs of metric M35 cobalt steel twist drill : 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 10pcs of each size., Weight: 0.13337966851 pounds, Manufacturer: Zunedhys