Diamond-coated bur for processing wood, ceramics, glass, jade, and hardened steel. Ideal for detailed engravings, repairs, carving, and finishing work. The shank diameter is 3.2 mm, and the working diameter is 2.4 mm. Contents: two burs. The bur is suitable for working with soft and hardwood, leather, glass, rubber, plastic, metal, ceramics, and porcelain. It can also be used to embellish semi-precious stones. With a diameter of 2.4 mm, precise work is possible, making fine carving and engraving easier. The bur has a high speed of 25,000 revolutions, which helps achieve a smooth surface.