Sufficient : you will 40 pieces diamond burr bits sets, including 6 shapes, the and diverse shapes are enough to meet your daily using needsSturdy Material: the grinding burrs drill bits set is made of diamond particle, sturdy, thick and , with high hardness and impact resistance, can work for some fine detail work, and can you for a long time6 Shapes: the diamond carving tools are designed in 6 different shapes, including sphere, cone, cylinder, round head cylinder, pointed, flat plat and more, which not only can meet your different requirements, also work efficiency and save mote time and laborUniversal : the diamond grinder bits set features with 1/8 inch , which compatible with most tools or die grinders, and practical tools in Widely Applicable: the diamond drill grinding bit can be widely applied for polishing, grinding, drilling, cutting, engraving, carving, etc., it is also capable of engraving on a of materials, such as tiles, , , granite, and more; A helper for a familyFeatures:Made of quality material, the diamond grinding tools set is sturdy and long lasting to use, perfect for fine detail work, such as polishing, sanding, grinding, cutting, engraving, carving, and more.These diamond burrs contain 6 different shapes, which are enough to meet the different requirements of carving enthusiasts and craftsmen.Specifications:Material: diamond particleColor: as shownSize: about 4.5 mm/ 0.18 inch longPackage Contents:40 x tool diamond burrs set (6 shapes)Only the above package content, other products are not included.Note: Light 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.