Dremel polishing compound (421) is designed for producing high luster when polishing metals and plastics Apply the polishing paste on felt or cloth accessories to polish dull oxidized film and imperfections on metals and plastics Polishing compound is ideal to use on materials such as steel, aluminium, brass, silver, gold and other metals as well as hard plastics The maximum recommended maximum speed when using polishing paste is 20,000 RPM Fits with all Dremel Multi-Rotary tools or other 3,2mm shank size multi-rotary tools