Prism Polish works on any metal on your boat, from your stainless steel, your brass, your ports, your railing, all your running rigging. It does three things at one time, it cleans, it polishes and it a protects. The first thing we want you to know is that Prism Polish cleans all metals, and then of course it leaves a polished finish. This polished finish is designed to protect the surface for up to 6 months time. Prism polish also excels at cleaning up oxidized lexan hatches and hazed plexiglass.