Powerful formula helps saves time cleaning vertical surfaces and areas that cannot be soaked. Completely removes cured polyurethane, crystallized isocyanates, mold release and other build-up from tooling, molds, and machinery. Cleans light build-up in minutes and heavy build-up overnight. Apply with a spray system. Use on any steel, aluminum and glass molds or parts. Test on epoxy, fiberglass or polymer molds prior to use.