20 Pcs Diamond Drill Bits Set – Twist Diamond Tip Drill Bit, Heavy Duty Mini Diamond Drill Bit Set for Various Applications Complete Accessories: This set 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 design that facilitates efficient debris removal during operation, reduces heat buildup, and enhances overall drilling performance. This design supports smoother and more comfortable usage. Durable Construction: Made with diamond coating and precision craftsmanship, these drill bits are durable, resistant to deformation, and maintain dimensional accuracy. They are built for long-term use in detailed drilling applications. Color: Silver Material: Diamond coating on metal shank Package Contents: 1 set x Diamond Drill Bits (20 pieces) Note: The package includes only the items listed above. Other accessories shown in images are not included. Note: Lighting and monitor settings may cause slight variations in color representation. Measurement may vary by +/- 1-3 cm.