Hammock Chair Ultimate Hanging Kit - Stainless Steel 500 LB Capacity Hammock Spring, Swivel Hook, and Ceiling Hammock Mount (with 4 Stainless mounting Screws) Hook Mount, Spring, and Swivel for mounting hammock chairs and other hanging accessories like punching bags, hanging plants, etc.. Ceiling Mount - 316 stainless steel mounting plate securely bolts into beams, boards, or any other overhead surface. Included are four long stainless phillips head screws. Spring Hook - Rated over 500lb capacity. The spring helps relieve stress from impacts, and will increase the lifespan of your hammock, in addition your mounting surface The hook/swivel will securely clip onto your hammock or swinging chair, enabling to you spin and twist without tangling or having to untwist. Perfect for Hammock Chairs, Porch Swings, Swinging Chairs, Punching Bags, or hanging any other heavy object from an overhead mount