Heavy duty hook mount , 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 securely bolts into beams, boards, concrete ceiling or any other overhead surface Including 8 shield anchors M6*60 for concrete ceiling, 8 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: 2 Piece Diamond Pad Eye (Ceiling Mounting ) 2 Piece Spring 2 Piece Snap Hook 2 Piece Swivel Hook 8 Pieces Screws 8 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.