... good self-shapening and strong mechanical retention,widely used for natural diamond bruting,gem stone cutting and synthetic ... , or in resin bond tools and metal bond tools for grinding, polishing, and lapping of cemented carbide, fine ... or in resin bond tools and metal bond tools for grinding, polishing, and lapping of cemented carbide, fine ... /40,20/30,18/20,16/18 high purity synthetic diamond powder