Sintered Diamond Thin Cutting Discs Mainly used for cutting Crystal, Agate, Jewel, Jade, Optical Glass and Ceramic Diamond Mounted Points Mainly used for processing Crystal, Agate, Jewel, Jade, Optical Glass, Ceramics, and other Non-metal materials.Specifications:Shank Diameter: Φ2.35mm, Φ3mm, Φ3.17mm.Whole Length: 45mm Diamond Mounted Points