Byer of Maine Swivel Hook Hanging Chair Adapter THIS IS THE ADAPTER ONLY, SWIVEL HOOK NOT INCLUDED. EASY: Installation is easy. This adapter mounts to the swivel hook with provided machine screws and locking nuts. STRONG: Weight capacity of 250 lbs. SECURE: This adapter is designed to allow for the Swivel Hook to be mounted using 1 1/2" wood framing.