Review on Green Hanging Snap Hooks: BETOOLL Heavy Duty Swing Hangers For Wooden Sets, Playgrounds, Porches, Indoors, And Outdoors - 2400 Lb Capacity (2Pcs) by Flee Pannell

They are good and well built. They appear very sturdy and I don't have any fear that my children are going to fall from these. It comes with 2 rings and 4 screws to put into the wood you are using them for. They do work well enough and I haven't had any issues with them. We've had them for almost 6 months now and we haven't had any issues.We had some squeakiness from the bearing but after you work them in it starts to get better. Maybe try some WD-40 on them and they won't squeak as bad. I haven't seen any rusting and they continue to work great. I don't think you would have any problems buying these and I'm sure you will be pleased. They aren't the cheapest but would you want to put your children on some cheapo rings that could eventually fail and injure your kids? I think it is well worth the price.