TACO - Polished Stainless Steel Rub Rail End Cap - 2-19/64" - F16-0091. Complete your Rub Rail installation with our Rub Rail End Caps - available in stainless steel for a secure fit. Caps rub rail to finish end of rail and ensure that inserts stay intact.. Features:. Caps rub rail to finish end of rail. Ensures inserts stay intact. Offers a finished look. Stainless Steel Marine Grade 316. Polished. 5-Year limited warranty