CBN Mounted Points Mainly used for processing Crystal, Agate, Jewel, Jade, Optical Glass, Ceramics, and other Non-metal mater CBN 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 CBN Mounted Points