Zinc-coated metal swing chain is well suited for use on any commercial playground environment. Our 3/16-inch swing chain does not have weak links or air bubbles that store-bought chain may contain. The zinc-coated chain holds up to 3900 lbs, making it commercial grade. To keep children safe please follow ASTM and CPSC guidelines when installing chain and accessories. Swing chain is used to connect swing seats to hangers, allowing for the swinging activity to take place. Chain is standard in 3/16 inch links and in 5/16 short links as pictured. The 5/16 inch chain prevents small fingers from entering the links and injuring themselves if they fall off the swing. Bulk orders by the pail or barrel are available.