Metric 25Pcs M35 Cobalt Drill Bit Set, 1.0Mm-13.0Mm Hss Cobalt Jobber Drill Bits M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc. Note that it is not applicable to quenched bolts Metric Size: The drill bits include 25pcs metric drills: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7 mm, 7.5mm, 8 mm, 8.5mm, 9 mm, 9.5mm, 10 mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, can meet more needs Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with excellent cutting performance. 19 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling Easy Storage: The drill set includes a drill case with size indexes and is packaged in a small package for easy storage and sorting. If you have any questions, please refer to us and we will be happy to help you