Universal Shank: the grinder bits set features with 1/8 inch shank, which compatible with most rotary tools or die grinders, very and practical tools in 6 Shapes: the 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, but also improve work efficiency and save mote time and labor Sturdy Material: the rotary grinding burrs drill bits set is made of particle, sturdy, thick and reliable, with high hardness and impact resistance, can well work for some fine detail work, and can you for a long time Sufficient Quantity: you get 40 pieces burr bits sets, including 6 shapes, the rich quantity and diverse shapes are enough to meet your daily using needs Widely Applicable: the drill grinding bit can be widely applied for polishing, grinding, drilling, cutting, engraving, carving, etc., it is also capable of engraving on a variety of materials, such as tiles, ceramics, marble, , and more; A very helper for a family, Weight: 0.32848877038 Pounds, Manufacturer: rirue