The Draper Cobalt Drill Bit Set uses high-speed steel with 5% cobalt to deliver durable, heat- and abrasion-resistant performance in tough materials. Each bit is fully ground with a 135° split point to promote precise centering and minimize drill wander, making it suitable for accurate drilling. The set features a diameter of 3.2 mm and is compatible with drill chucks that accept 10 mm or 13 mm shanks. For optimal results and extended life, use cooling agents during drilling. The bits conform to DIN338 and DIN1414-2 standards and are designed to work with common hard-to-machine materials such as alloy steel, titanium alloys, stainless steel, hardened steel, cast iron, and carbon steel.
Features
- M35 high-speed steel with 5% cobalt for durability
- Fully ground 135° split point for precise centering
- Diameter 3.2 mm; compatible with 10/13 mm chucks
- Works best with cooling agents for extended life
- Suitable for alloy steel, titanium alloys, stainless steel, hardened steel, cast iron, carbon steel
Technical specifications
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