TR100 - 200 Grit Diamond Bur - 3/32" Shank (Made In USA) Rounded Taper - Approx Dimension: 10mm Head Length, Diameter: 2.7mm (Base), 1.8mm (Tip), 3/32" Shank 200 Grit 100% Natural Diamond (Not Synthetic), U.S. Made - High Quality - Durable Great for grinding or carving all types of stone, glass, tile, wood, and more. Great for making marble or other stone sculptures. The 200 Grit will cut while minimizing chipping or pitting of the material being cut.