The Cameo Silver non-diamond grinding discs can be used with diamond abrasives during the rough and intermediate steps. These discs feature a patented honeycomb cell structure that minimizes time and surface area contact with the sample, allowing for better circulation of diamond suspension. They are recommended for polishing medium to very hard ferrous alloys using diamond abrasives between 3 and 6 microns. It comes with adhesive or magnetic backing options for added convenience.