These are much heavier and safer for the grandbabies. They are very sturdy and will hold a 6 foot swing easily.

Worked really well to hang my gymnastic rings. All stainless, even the lag bolts are stainless. This hanger is perfect as it will handle the weight, is stainless steel, and is easy to install.

After a ton of looking these seemed to be the choice. Very decent price and the quality is very strong. The hardware is of good quality.