VALUED MATERIAL & CONSTRUCTURE - Manufactured of 304 stainless steel with added thickness, robust and corrosion-proof to afford longer service time. LARGE CAPACITY UP TO 800LB - The whole set passed through the tensile testing, approved to maximumly load 800LB in experimental environment. VERSATILE MOUNT FOR INDOOR & OUTDOOR - The durable hanging bracket set can be used to set up indoor apparatus like boxing bag, swing chair, aerial yoga straps, gym rings and outdoor hammocks, swings, sun shade sail and more. 4 in 1 MOUNT SET - Package includes 1 spring buffer, 1 swivel hook with double eyelets, and 2 lockable carabiners, free to assemble for various applications. BUY WITH CONFIDENCE - We are the manufacturer of these heavy duty hangers thus we are able to take all concerns into consideration and hep you solve any problem in an expedited way.