... carbide and aluminum oxide material Product Discription Vitrified Bonded Grinding Wheels are used for grinding, lapping, honing and polishing. The ... grain, grade, bond, structure, shape and dimensions.Vitrified Bonded Grinding Wheels Comparison Chart For Hardness Grade ChinaGB2484-2495-84RussiaAmerica NortonUniversal Co ... ,F800,F1000,F1200Mirror finish grinding, precision grinding. cup grinding wheels