Powerful lower odor formula helps save time cleaning molds and machinery. Completely removes cured polyurethane, crystallized isocyanates, mold release, and other build-up from tooling, molds, and machinery. Reusable formula cleans light build-up in minutes, heavy build-up overnight, with less odor than Stoner B510 Polyoff. Useful for overnight storage of mix head parts. Use freely on any steel, aluminum and glass molds or parts. Occasional abrasion with brass or nylon scrubbers or brushes speeds cleaning. Test on epoxy, fiberglass or polymer molds prior to use.