Hard firm felt wheel for metal polishing with diamond paste to remove grinding serrations and scratches for a mirror finish. Ideally use to mirror finish chisels, carving tools and knives. Note to change the wheel for different diamond micron . Its metal 3/32 ” shank fit Proxxon micromot, dremel and all brands of hand drill with jaw chuck or a similiar size collet. Can be used for wood and plastic polishing. Its small diameter access to hard to reach areas in fine wood sculpture and stone polishing.