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 multiple drilling needs for precision tasks. High Performance: These heavy-duty mini diamond drill bits feature a pointed 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 design that aids in debris removal during operation, reduces heat buildup, and enhances overall drilling efficiency for improved performance. 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 reliability for repeated use. Color: Silver Material: Diamond Package Contents: 1 set x Diamond Drill Bits Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement tolerances may vary by +/- 1-3 cm.