DOME - 80 Grit Diamond Bur (Made In USA) - 1/8" Shank 13mm Approximate Head Length, 20mm Approximate Head Diameter, 1/8" Shank 80 Grit 100% Natural Diamond (Not Synthetic) Great for grinding or carving all types of stone, glass, tile, ceramic, wood, and more Great for making marble or other stone sculptures U.S. Made - High Quality - Durable