These Large Diamond coated Cylinder Burs can be used in your Dremel or similar rotary tool. Coated with diamond grit they are great for carving and sculpting in stone, glass, bone and ceramic Dremel Bits, Dremel Drill, Dremel Rotary Tool, Dremel Projects, Bottle Cutting, Glass Engraving, Cylinder Shape, Tungsten Carbide, Tealight Candle Holders