This mouthpiece has what appears to be a good quality finish. So far I have purchased two of these. My daughter has been using one for a year now. I was happy enough with it that we purchased a second one for her to use and leave at school.
I used these to replace the same size hinges without the soft close feature. The swap was simple and the hinges work well. I did several cabinet doors with the same product over 5 years ago and they are all still working well also. I would highly recommend these!