For fine detail work, cutting, engraving, carving, touch-up and finishing. Use on wood, jade, ceramic, glass, hardened steel, semi-precious stones and other hard materials. Bits are covered with diamond particles. For fine detail work, cutting, engraving, carving, touch-up and finishing Use on wood, jade, ceramic, glass, hardened steel, semi-precious stones and other hard materials Removes material quickly and easily Bits are covered with diamond particles 1/8" shank DIMENSIONS: Contents: 1 Bit Description: Engraving Cutter Bit Diameter mm: 2.0 mm Color Code: Teal Overall Length: 1.5 Material: Diamond Grit Coated Bit Diameter Inch: 5/64" Shank Diameter: 0.125