Compound supplied in a 500g block for fuss-free application and simple storage. Apply little and often during use for best results. Coarse Black: First-stage polishing of most hard and soft metals. Fine Blue: Final-stage polishing of plastics and most metals. Coarse Brown: First-stage polishing of soft metals (use with spiral-stitched buffing wheels for best results). Green: First-stage polishing of soft metals and final buffing of hard metals (use with sisal buffing wheels for best results). Fine Red: For polishing and buffing of gold and silver (use with loose-leaf and felt buffing wheels for best results. Fine White: Final polishing of hard metals.