Feature Highlights: 1. Durable High-Speed Steel Material – Made from reliable HSS (high-speed steel), these drill bits stay solid and resist wear even after long-term use. 2. Complete 40-Piece Set – Includes 40 fully ground mini twist drills in sizes 0.5mm, 1.0mm, 1.5mm, and 2.0mm (10 pieces each), so you’ll always have the right bit on hand. 3. Precision & Versatility – Perfect for detailed tasks like woodworking, electronics repair, DIY crafts, and drilling into circuit boards, thin metal sheets, plastic, and soft materials. 4. Straight Shank Design – Fits securely into most standard chucks for stable, accurate drilling. 5. User-Friendly & Practical – Neatly packaged and ready to use, ideal for hobbyists and home improvement projects. Product Details: This 40-piece mini drill bit set is crafted from high-quality HSS steel, offering strength and durability for repeated use. The straight shank ensures easy installation and steady performance. Suitable for precision work on wood, plastic, thin aluminum or iron sheets, PCB boards, and light DIY tasks. A handy all-in-one set for crafting, repairs, and small drilling projects. Specifications: - Material: HSS (High-Speed Steel) - Shank Type: Straight - Sizes Included: 0.5mm, 1.0mm, 1.5mm, 2.0mm (10 pieces each) - Total Quantity: 40 drill bits - Color: Silver - Package Contents: 1 × Set of straight shank twist drill bits Note: Not recommended for drilling hard metals. Please confirm size details before use. Slight color variation may occur due to lighting and screen differences.