Review on Enhance Door Durability with KS Hardware Mortise Spring Corners: Complete Your Doors with These Reinforcing Corners by Mike Walters

For now I'm giving them 4 stars because I just installed them and I'll have to wait to see how they hold up but they seem to be well made. Spring will be key. I installed them on the door leading to the garage as anyone getting in or out would slam them. . They were very easy to install and very easy to set up. I had to mount both hinges as the door is heavy, but I didn't have to fully adjust them. This should help extend the life of the spring. Highly recommended.