... aluminum oxide material Product Discription Vitrified Bonded Grinding Wheels are used for grinding, lapping, honing and polishing. The ... , bond, structure, shape and dimensions.Vitrified Bonded Grinding Wheels Comparison Chart For Hardness Grade ChinaGB2484-2495-84RussiaAmerica NortonUniversal ... GrindingF500,F600,F800,F1000,F1200Mirror finish grinding, precision grinding. cup grinding wheels