Comprehensive Set with Multiple Sizes: you receive 12 pieces of cylinder cone shape carving burr sets in 12 different sizes, including 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, the set caters to your diverse needs and be your dependable partner in different art projects 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