Features ????【Precision & Durability】Crafted from high-speed steel with excellent workmanship, these mini twist drill bits are stable and durable for long-lasting use.They are excellent for smooth chip removal. ????【20 Sizes Included】This drill bit set includes 20 different sizes ranging from 0.3mm to 1.6mm, making it perfect for a variety of projects. ????【Versatile Use】HSS drill bits are ideal for electronics, PCB, crafts, jewelry, watchmaking, and more, these micro drill bits are perfect for any DIY enthusiast or professional. ????【Easy Storage & Portability】Comes with a high-quality blow molding storage box that keeps each drill bit in its own slot, making it easy to store and carry. ????【Buy with Confidence】Our products are backed by our brand guarantee and are backed by first-class after-sales service from our stores. If you have any questions about our products, please contact our professional customer service and we will solve your problems effectively. Specification: Material: High Speed Steel Drill Bit Size: 0.3mm, 0.35mm ,0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1.0mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm   Package l ist: 20 * Mini Drill Bit Package List