The Shackle Modern Swing Hanger attached to the top rail of a steel post swing set and is available in multiple sizes. The hanger will fit either a 2-3/8-inch bar or 3-1/2-inch bar. These galvanized ductile iron hangers are extremely durable and recommended for any public setting. A benefit of using the Shackle Modern Swing Hanger is that you can connect chain directly to the swing hanger without an s-hook, as you will only need our Allen wrench with special head.