ITEM NAME:Strong Durable 316 Stainless Steel Rail End for Marine Boat Tubing Hand CIE.Perfect for sailboat and powerboat railings. 22mm 316 Stainless Steel Rail End for Marine Boat Tubing Handrai. Material: Polished Marine Grade 316 Stainless Steel. 1 Piece Boat Rail End. We'd like to settle any problem in a friendly manner.