This hardware is excellent quality for the price. But why only 2 carabiners?? I had to buy 2 more at Home Depot to complete my installation. I also bought some eye bolts to use for some corners rather than the diamond plates. That makes a much stronger connection by going thru the wood, rather than pulling against 4 screws. The 2 diamond plates I used were mounted horizontal so the tension would pull laterally on the screws.