Duraherra Cobalt Drill Bits Set 4mm 10 Pieces, M35 HSS Metric Jobber Bit with Plastic Case for Stainless Steel, Metal, Aluminium, Tile, Wood, and Iron

【Robust Construction】: Crafted with premium HSS M35 cobalt, these drill bits are built to withstand frequent and intense use. Their high heat resistance ensures they maintain performance during extended periods, without the need for cooling or additional cutting fluids. 【High-Speed Precision】: Our hardened drill bits offer fast, controlled and precise operation. Enjoy comfort and efficiency in every project, thanks to their expert engineering. 【Twist Design for Superior Performance】: The copper oxide finish not only enhances their heat resistance but also maintains the bits' integrity through repeated use. The twist design ensures smooth penetration and clean hole creation, making them perfect for a variety of applications. 【Versatile Applications】: Forged to excel on hardened materials, these M35 Cobalt HSS drill bits are versatile enough to cut through steel, stainless steel, cast iron, high-temperature alloys, titanium alloy, hard plastics and woods, as well as softer materials. 【Convenient Packaging】: The set includes 10-Pieces of 4mm hardened drill bits, meticulously arranged in a plastic case for secure storage and easy access. This ensures that the bits remain in place and are ready for use whenever you need them., Weight: 0.110231131 Pounds, Manufacturer: Duraherra