Features Superior Diamond Durability: Crafted from premium diamond materials, these drill bits offer exceptional hardness and longevity for reliable performance on tough surfaces High Strength & Resistance: These drill bits feature outstanding strength and oxidation resistance, ensuring they withstand extensive use without compromising quality Versatile Application Range: Perfect for a variety of materials including metals, agates, gems, pearls, and tiles, making them essential drilling tools for diverse projects User-Friendly Tipped Design: Designed for compatibility with standard drills, these tipped drill bits are easy to use, ensuring a smooth and efficient drilling experience Quick Installation & Removal: The drill bits are designed for effortless installation and disassembly, enhancing your work efficiency and productivity in every task Features: 1、Made of diamond materials. high hardn, in use. 2、Drill bit set, high strength, resistance and oxidation resistance. 3、It is widely used in metals, agates, gems, pearls, pendants and pebbles. 4、Tipped drill bit, can be uses with the drills, simple to use. 5、Easy to install and disassemble, which can well improve your work performance Specification: Features: Made of diamond materials. high hardn, in use. Drill bit set, high strength, resistance and oxidation resistance. It is widely used in metals, agates, gems, pearls, pendants and pebbles. Tipped drill bit, can be uses with the drills, simple to use. Easy to install and disassemble, which can well improve your work performance Specification: Diamond Tipped Drill Bit Set Twist Drill Bits 10pcs/Set Size: 0.8 / 1.0 / 1.2 / 1.5 / 1.8 / 2.0 / 2.5 / 3.0 / 3.5 / 4.0mm The Length of Twist Drills: Approx. 75mm/3.0in Approx. 65mm/2.6in Approx. 60.5mm/2.4in Approx. 5m/2.1in Approx. 46.5mm/1.8in Approx. 4m/1.7in Approx. 38mm/1.5in Approx. 34mm/1.3in Approx. 30mm/1.2in Approx. 23.9mm/0.9in Use Range: Metal, Agate, gemstones, pearls, pendants, Cobblestone Package Includes: 1 x 10pcs/Set Diamond Tipped Drill Bit Set Twist Drill Bits Note: Different material hardn, the effect is different The color of Package in random Package List