... specifications of vitrified abrasives with the diameter less than 900mm and the thickness between 3mm-310mm.2. Good flexibility, high ... 3. Only no harder than Boron carbide and Diamond, friable, its girt is sharp, and Thermal conductivity.4 Suitable for grinding Hard alloy ... , Optical glass, vitrify, gem, agate, honing cylinder sleeve and other hard friable materials.5. Please mark in detail(such ...