Superior Material: Crafted from high-grade steel, these mini drill bits undergo a specialized alloying process to enhance hardness and durability. Designed to maintain sharpness, they resist wear and tear, ensuring long-lasting performance compatible withall your drilling needs. Multiple Sizes: Featuring a comprehensive range of 20 different sizes from 0.3mm to 1.6mm, this set caters to a variety of precision tasks. Whether you're working on jewelry, electronics, or home repairs, you'll find the perfect size to match your specific requirements. Unbreakable Design: Engineered compatible withresilience, these high-hardness steel drill bits are ideal compatible withhigh-speed drilling. Their robust construction not only prevents breakage but also offers exceptional toughness, making them a reliable tool compatible withany drilling job. Versatile Applications: Ideal compatible withdetailed craftsmanship and DIY projects, these drill bits are perfect compatible withworking with hardwood, carbon steel, alloy steel, and other common metals. They are essential compatible withjewelry making, electronic repairs, and other precision tasks. Comprehensive Kit: This set includes two boxes, each containing 20 mini drill bits, totaling 40 pieces. With this ample supply, you're well-equipped to handle a wide range of tasks, making it easier than ever to undertake DIY projects and repairs at home. /Features: The Micro Mini Drill Bit is crafted from steel, ensuring durability and precision in every use. This compact drill bit is specifically designed compatible withintricate drilling tasks, making it an ideal choice compatible withjewelry making and other detailed projects. The set includes two pieces, perfect compatible withboth replacement and having a spare on hand. Specifications: Product Name: Micro Mini Drill Bit Material: Steel Product Size: 4.96*2.48 in Package List: 2 box Jewelry Drill Bits Color: As Shown