M35 Cobalt Round Straight Handle Metric Drill bit Set 1.5mm-6.5mm Drill Bits Suitable for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum

M35 Cobalt Round Straight Handle Metric Drill bit Set 1.5mm-6.5mm Drill Bits Suitable for Stainless Steel, Hard Metal, Cast Iron, Copper, Aluminum

Cocobalt drill bits are suitable for soft metals such as stainless steel, mild steel, cast iron, engineering steel, hard metal, copper, aluminum, etc Metal drill bits with 5% cobalt element improve hardness, high temperature resistance, durability and performance better than conventional drill bits Note that it does not apply with glass and ceramics The 135% spiral double-edged cutting sharp corners do not linger on the surface and work quickly without additional positioning Metric drill bits 1.5mm 2mm 2.5mm 3mm 3.2mm 3.5mm 4mm 4.5mm 4.8mm 5mm 5.5mm 6mm 6.5mm A total of 13 round straight steel drills of different diameters, suitable for home handicraft scenes and professional work Small sizes require attention to speed and temperature Compact storage box Easy to carry and store drill bits Box size identification for easy selection and storage