This 1" Pendulum Swing Hanger with Clevis Connector will save the cost and hassle of installing an S-hook typically used to attach chains to swing hangers. Bolt pin has a tamper resistant head that requires an allen wrench with special hole to open and close. Can be used with any ductile iron or stamped steel hanger. Uses 12mm bolt and nut. This product should last 2 years in harsh conditions and up to 5 years in optimal conditions. Some conditions may require replacement sooner. Tensile strength is 5000 lbs. Sold as each.