Discover the ultimate solution for your drilling needs with our 10 Pack of 4mm Fully Ground HSS Cobalt Drill Bits. Specifically manufactured to DIN 338 standards, these drill bits feature 5% cobalt content, enhancing heat hardness and significantly extending their lifespan. The innovative 135° split point design ensures self-centring, making penetration easier and reducing thrust during use. Enjoy efficient clog-free swarf clearance, perfect for tackling high carbon and stainless steel with ease. Each drill bit is securely housed in a high-density case for safe storage, ensuring your tools are always ready for action. Key Features: - Fully ground HSS Cobalt drill bits manufactured to DIN 338 standards. - 5% cobalt content increases drill bit longevity. - 135° split point design for self-centring and easier penetration. - Efficient swarf clearance prevents clogging. - Ideal for drilling through high carbon steel and stainless steel. - Comes with a durable high-density storage case. Specifications: - Net Weight: 0.06kg - Pack Quantity: 10 - Size: Ø4mm At our online store, we offer a vast selection of tools and workshop equipment for both DIY enthusiasts and professionals. With over 10,000 products available, we have everything you need for any job, big or small. If you can't find what you're looking for, don't hesitate to reach out to us for assistance!