Package includes: 8pcs diamond drill bits in sizes 0.8, 1.0, 1.2, 1.5, 1.8, 2.0, 2.5, and 3.0mm, one piece per size, offering a range of sizes to meet various drilling needs. Material: Constructed with diamond and spiral technology, providing both hardness and toughness for durable performance. The sharp design allows for efficient chip removal and smooth drilling. Compatible tools: Suitable for use with rotary tools including hand drills, pillar drills, flexible shafts, and bench grinders. Applications: Ideal for drilling small holes in glass, metal, shells, jade, beads, marble, stone, plasterboard, and wire. Performance may vary depending on material hardness. Note: Using coolant during operation can improve efficiency and extend the lifespan of the drill bits. Specifications: - Material: Diamond - Type: Drill bit set - Sizes: 0.8 / 1.0 / 1.2 / 1.5 / 1.8 / 2.0 / 2.5 / 3.0 mm - Color: Silver - Quantity: 8 pieces