Description : Heavy duty hook mount plate , spring , snap hook , and swivel hook for mounting hammock chairs and other hanging accessories like punching bags , hanging plants and so on Ceiling Mount - 304 stainless steel mounting plate securely bolts into beams , boards , concrete ceiling or any other overhead surface Including 4 shield anchors M6 * 60 for concrete ceiling , 4 screws M5 * 60 for wooden beam The spring has a capacity of about 500lb , and it helps relieve stress from impact ; Strong , durable and easy to install and use The swivel hook allows 360 degree rotation without any tangling or twisting , and the snap hook will securely clip onto your hammock or swinging chair Great accessories for hammock chairs , porch swings , swinging chairs , punching bags , or hanging any other heavy object from an overhead mount Specification : Material : 304 Stainless Steel Carbon Steel Spring Color : Silver Capacity : Approx . 500LB Package Includes : 1 Piece Diamond Pad Eye Plate ( Ceiling Mounting Plate ) 1 Piece Spring 1 Piece Snap Hook 1 Piece Swivel Hook 4 Pieces Screws 4 Pieces Shield Anchor Bolts Note : The hammock chair is not included in the package . Due to the differences between different monitors , the picture may not reflect the actual color . There is 2 - 3 % difference according to manual measurement , please check the size carefully before you buy the item .