The Fine-grit diamond bits are ideal for detailed carving on glass, stone, and ceramics. 6 types of head shapes tackle diverse tasks, enhancing work efficiency Twenty pieces diamond burrs 1/8 inches shank. These diamond grinding bit compatible with diamond bit compatible with & & rotary tools Diamond burr bits maintain grit integrity after carving hard materials (such as jade) and the abrasive grains do not easily fall off These diamond burr bits are ideal for grinding, engraving, polishing, carving, deburring, cutting, drilling, sculpting, and milling on various materials Apply light pressure to prevent debris buildup and bit damage during grinding; water-cooling recommended to extend the lifespan of diamond grinding bit and enhance safety Color: As shown Material: Metal Package Contents: 22 pcs * polishing bits 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.