PlayStar's standard swing hanger is over 30% larger with a wider diameter steel than competitive standard swing hangers. Patented Dual fastening system utilizes a second lag screw. This Doubles the holding power and ensures swing hanger will not turn out of orientation. Nylon bushing, swings smooth, quiet and straight. Weight limit is 210 lbs per pair. Swing Hangers have exclusive, patented double fastening system