Seachoice 5 1/2″ Rail End Fitting. Get your boat in ship-shape with top-notch replacement parts for bottom dollar! End-in Rail Fitting is made from cast 316 stainless steel for good looks and resilience, and accepts standard 7/8″ rail. Pre-drilled for two #10 screws, included. Order Yours Today! Seachoice 5 1/2″ Rail End Fitting