This tripod swing features a design that makes it safe and sturdy enough to accommodate the needs of almost any playground. The 3.5-inch diameter top rail and 2-7/8-inch frame is made of galvanized steel for durability. Children will delight in playing on this swing. It is only 8-feet tall, which makes it ideal for a playground geared toward younger children through junior high students. You can opt to purchase the frame alone or you can order the frame with the belt seats, hardware, and chains. This heavy-duty swing is available in four sizes to meet the needs of any play area. A smaller play area may require only a one bay model that has two swings. A larger playground may need a four bay model that has eight swings. Mid-size playgrounds will use a two or three bay model.