Material:material is stainless steel 316 commercial marine Grade,smooth without burrs, high hardness, non-defrmation, durable, wear-resisting, anti-rust, anti-corrosion, can be used indoor, outdoor or even in humid environment, can be used for a long time in the saltwater environment. 3/8" anchor swivel working load limit : 1500LBS,the pivot is free to spin The product is design with 360° Swivel, you can rotate you hanging Chair freely with ease. The free rotation can effectively avoid the hanging rope or chains get tangled. Overall Dimension(Length) x (Width):115x43mm Used as marine mooring tool,also for hanging swings, chairs, hammocks, climbing toys and so on. AISI 316 stainless steel eye and jaw swivel shackle made from marine stainless steel 316 ,they can be used in a salt water invironment. One end interface with detachable design,Other One interface with arc closed eye,The scenes to be used very widely,such as,hammock chairs swing, porch swings, swinging chairs, punching bags, climbing rope, Yoga seat, etc. The permanent antirust stainless material make it suitable both indoor and outdoor. Package content : 1 x anchor swivel eye to jaw