Something like this is a bit of a hassle to install, level checking involves counting millimeters with the front or back of the bubble line. Recommend making a mount if you are making several of these. If there is even a slight difference between the two sides, you can feel how well the drawer slides out or snaps into place. Be sure to drill pilot holes and patience will win out. In general, the quality is satisfied. Stable detent force in open and closed state. I've bought several from big stores, the quality of which varied depending on the difficulty of opening with soft-closing function. All of them are very consistent and have the right amount of catches at the start. Not sure I would buy the soft close feature again but light years ahead of my previous cheap builder slides.