Come with 2 antirust SUS304 snap hooks whose manual screw gate reduces chance of open-gate failure. And don't have sharpe points that can cut rope like others doExtensive compatibility, supports hammocks, swing hanging chair, tree swing saucer, hanging plant, bird feeder, or for dog turns freelySmooth and frictionless for 360 degree smooth rotation prevents rope rotation, kinking and hockling. No more twisted ropes or chainsDouble ended swivel ring is made of 304 stainless steel, which is hard and durable, does not rust and is resistant to corrosion, Industrial-grade swivel designed, Weight Limit - 1,200 lbsPerfect for a secure swivel system for a heavy heavy hanging plant,It certainly makes it short work of rotating sooo easy without having to unhook and rehook the heavy plant giving 360 degrees optimal exposure!