Great price and they worked exactly as I hoped they would. They are also pretty easy to install (I just worked on one hinge at a time so I didn't need to fully remove and then realign the doors).

We are in a kitchen remodel and several of the new cabinets were going to hit walls, the oven etc. The contractor tried 2 different hinge restrictors but these have worked the best so far. I did not know this product existed. It is great to know that I don't need to add bumper pads to walls!

To install: Remove one hinge, set the rounded angle into the rounded area of the hinge, and screw in. I only used one per cabinet door, and it worked great. Took only 20 minutes to install 20, and it was only that long because I had to figure out which cabinets needed it. Should be part of any new luxury kitchen install when contractors are doing it! Great find and great price.

My cabinets swing open 105 degrees. As a result, when fully opened, they hit the next cabinet over. This causes damage to the opened cabinet by creating a crease (indentation) along the entire height of the cabinet if you open them fast.

1) I posted two pictures. The first picture is with the clip installed on the right cabinet and the default 105 degree on the left cabinet. The second picture is with both installed. You can probably get away with just installing it on one of the hinges per cabinet. I installed them on both hinges per cabinet as I was already installing it, why not spend the extra few minutes doing it on both.
2) Like others have said in the comments section, if you are doing both hinges, don't take the door off. Just do one hinge at a time
3) Also like others have said, no instructions. Just YouTube how to install them. Super easy to install if you know how to place them in the hinge.
4) IMPORTANT: If you are having new cabinets installed, have the cabinet installer install the clips while the cabinets are going up. I didn't know this was going to be a problem for me until after my house was newly built. Now I have to install the clips after the fact. The cabinet installer can do each in 10 seconds while the cabinets go up.
5) They are tiny so if you have huge fingers, you might drop a few installing them

If you install one at a time, you don't need to relive the door, simply undo one hinge at the cabinet side, close the hinge, insert restricter, and reconnect the hinge. They're not a hard stop, meaning if you really push the door, it will go past the restricter limit, but shouldn't really be a problem unless you're a brute.