BYER OF MAINE Heavy Duty Swivel Hook and Chain for Hanging Chair/Hammock Chair, Swivels 360 Degrees, Holds up to 250lbs Put the finishing touches on your indoor retreat with our sturdy hanging chair swivel hook. Designed to work with Byer of Maines hanging chairs, this hook holds up to 250lbs. Made with industrial bearings for a safe and secure hanging, this hook can turn a full 360 degrees, making it a true swivel hook. This hook is easy to install. Using the provided lag screws, attach to a secure surface, snap on chain to desired length, and hang your favorite chair. If you do not have a 4 surface, consider using Byer of Maines hanging chair swivel hook adapter. For more details, check out our video. Though designed to be used indoors, this hook can be used outdoors with appropriate maintenance. Please be aware that the Swivel Chair Hook is designed for use in residential leisure applications to provide support for a hanging chair. It is NOT designed for use in therapeutic care or other commercial or institutional environments where it would be subjected continuous movement, rotation, or excessive repeated loading.