... , and lapping of cemented carbide, fine ceramics, variety of glasses, non-ferrous metals, precious and other hard materials.Usage: It is used the high quality ... tools for grinding, polishing, and lapping of cemented carbide, fine ceramics, variety of glasses, non-ferrous metals, precious and other hard materials.Available grit ... ,40/50,30/40,20/30,18/20,16/18 high purity synthetic diamond powder