The Dremel 421 Polishing Compound is a professional-grade finishing solution designed for achieving a high lustre on metals and plastics. This versatile compound works in conjunction with felt or cloth accessories to deliver superior polishing results, effectively removing dull oxidised film and light surface imperfections. Suitable for use with compatible Dremel polishing wheels and mandrels, this compound integrates seamlessly into your rotary tool setup. Use polishing compounds 414, 422 and 429 with mandrel 401, whilst compounds 423 and 425 are compatible with mandrel 402. This compatibility ensures you can select the right combination for your specific polishing task. Ideal for metal fabrication, jewellery making, and restoration work, the compound excels at restoring shine to worn surfaces and creating professional mirror finishes. Whether you're working with steel, brass, aluminium, or plastic components, the Dremel 421 delivers consistent results when used at the recommended maximum speed of 20,000 RPM. Features and Benefits: • Produces a high lustre finish on both metals and plastics • Effectively removes oxidised film and light surface imperfections • Compatible with felt and cloth polishing accessories • Suitable for professional fabrication and restoration projects Specifications: Maximum RPM: 20,000 1/min