20 Pcs Diamond Drill Bits Set – Twist Diamond Tip Drill Bit, Heavy Duty Mini Diamond Drill Bit Set for Various Applications Complete Accessories: This package includes 20 pieces of twist diamond tip drill bits in 10 different diameters: 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, and 4.0 mm. This variety meets diverse drilling needs for precision tasks. High Performance: These heavy-duty mini diamond drill bits feature a pointed tip design for efficient drilling and polishing. They enable faster hole drilling in suitable materials, offering a smooth and time-saving experience. Versatile Use: Designed with precise sizing, these diamond-coated drill bits are suitable for use on hard materials such as jade, metal, gemstones, pendants, stone, and cobblestone. Groove Design: The drill bits feature a groove structure that facilitates debris removal during operation, reduces heat buildup, and enhances overall drilling efficiency and cleanliness. Durable Construction: Made from high-quality diamond material, these drill bits are finely polished for strength and accuracy. Resistant to rust and deformation, they offer long-lasting performance with reliable dimensional precision. Color: Silver Material: Diamond Package Contents: 1 set x Diamond Drill Bits Note: The package includes only the items listed above. Other accessories shown in images are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement tolerance: ±1–3 cm.