This set of diamond rotary burrs is perfect for grinding, engraving, polishing, and carving on a variety of hard materials such as stone, glass, metal, tiles, ceramics, marble, and granite. The 60-grit diamond burrs offer a rougher and faster surface, resulting in high-speed grinding and a smooth, polished surface. The set includes 10 heads of different shapes to meet all your home improvement, crafting, and engraving hobby needs. Compatible with most rotary tools and mini electric grinders, this diamond drill set is durable and wear-resistant. Buy now and enjoy a 100% satisfactory solution or full refund in case of any issues!