Mold Polish Injection Mold Cleaner, 45216, is a paste-type mold polish that cleans and restores mold surfaces. It is an effective formulation on tool steel, stainless steel, aluminum, brass, bronze, zinc and other metals used in injection, blow, extrusion, compression and rim molding. Quickly and safely removes plate-out, oxidation and stains, while providing a high luster sheen. Mold Polish Injection Mold Cleaner is recognized as a USDA certified bio-based product.