Convenient Storage and Portability: along with the jewelry making stone setting burs, you receive a sturdy plastic storage box; This box ensures easy portability and storage of the diamond grinding bit; The design allows for quick access to your tools, enhancing productivity while ensuring they remain organized and safe from loss Reliable Material: the diamond burr is crafted from quality tungsten steel, known for its durability and sharpness; These robust carving burr sets feature clear imprints and stable high speed performance; Crafted with care and precision, these tools provide excellent carving efficiency and are suitable for detailed work Versatile Use in Tools: the stone carving set is designed with 3/32 inch shank, making it suitable for different tools such as electric drill, grinders and other rotary tools; Regardless of the tool you choose, our carving burr set's versatility ensures seamless operation Versatile and Ideal for Fine Detail Work: the diamond burrs set is ideal for a range of materials, be it silver, stone, jewelry, ceramics, glass, olives, beads, wood and more; It's suitable for fine detail work, cutting, engraving, and finishing, providing precision and control for results Material: alloy Colour: Silver Size: 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.7 mm, 2.0 mm, 2.2 mm, 2.5 mm, 2.7 mm, 3.0 mm, 3.5 mm, and 4 mm Package Contents: 1x Cylinder cone shape carving burr sets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.