MACXCOIP Cobalt Number Size Drill Bit Set, 60Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, #1-60

Additional Details from the Manufacturer

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More features

• Various Sizes: 60 sets of number size drill bits from #1 to #60 (0.228"-0.040" or 5.79mm-1.02mm), can meet more needs
• 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
• 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. 13 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling
• Warm Tips: Pay attention to maintaining a vertical angle before opening, so that the drill bit can fall into the corresponding hole as much as possible. If it is found that it cannot be pulled, it may be because the drill bit below is stuck in the protective sponge and needs to be repeated vertically and then gently pulled to prevent the drill bit from breaking