Quality MaterialsRotary Burr Set made of tungsten carbide high speed steel, wear-resistant, durable, high working efficiency and long service life, making work more convenient. Universal Compatibility3mm(1/8) shank diamond grinding burr drill bits set fit for DREMEL and most rotary tools or die grinders. High compatibility, easy change. Diamond Grinding Bits20 PCS diamond grinding burr bits with various shapes, packaged in a sturdy plastic box, includes sphere, cone, cylinder, round head cylinder, bullet, etc, Rich in quantity and various shapes meet your many needs. Great gift for DIY Enthusiasts. Multi-FunctionDiamond burr bits drill kit can be installed on an electric grinder, engraving machine, pneumatic engraving pen, and flexible shaft grinder. The high-speed rotation of diamond burrs is very suitable for abrasive, engraving, cutting, polishing, engraving, and molds etching. Wide Range of UsesDiamond burr bits can be used for stone, glass, metal, hardwood, ceramic tiles, ceramics, marble, granite, and other hard materials. Highly recommended for DIY engraving hobbies, craft modeling, home repair (wood, plastic and dogs nails) etc. Specifications: Product Rotary Bits Burr Set Material: Stainless Steel color: gold Quantity: 20pcs Weight: 70g