Discover the exceptional performance of our 10-Pack 3.5mm Fully Ground HSS Cobalt Drill Bits, expertly designed for precision drilling in various materials, including high carbon steel and stainless steel. Manufactured to DIN 338 standards, these drill bits contain 5% cobalt, enhancing their heat hardness and significantly extending their lifespan. The innovative 135° split point design ensures self-centering capabilities, reducing thrust and facilitating smoother penetration into tough surfaces. With exceptional clog-free swarf clearance, these drill bits maintain efficiency during use and can be resharpened without compromising performance. Each set comes in a high-density case for secure storage, making it perfect for both DIY enthusiasts and professional tradespeople. Explore our extensive range of tools and workshop equipment, featuring over 10,000 products tailored for all your project needs. If you need assistance finding the right tool, our dedicated team is here to help!