... diameter from 75mm-910mm 4.High quality Vitrified bonded combined for PCD wheel grinding The vitrified wheels are made of diamond or ... CBN, the products can be used for the parts of Motor, Bearing, Semi-conductor, Glass, Optics, Metal ... , Ceramic, PCD/PCBN, etc1. Diameter from 75mm, 100mm, 125mm, 150mm, 160mm, 175mm ...