KingChain® Zinc Plated Straight Link Machine Chain is a low carbon steel, electronically welded chain that is not heat-treated. It has shorter links that make it very flexible and particularly well suited for agricultural applications, guard rails, tailgate chains, door chain and playground equipment. Safe Work Load of (SWL) 270 lb (122 kg). Never exceed the Safe Work Load (SWL). **NOTE** Do not use for overhead lifting.