Those are good slides. Actually more like 4.5 stars. It should be remembered that they mistakes are very unforgiving. I used them to replace other non-soft close sliders in my closet. I made the case that holds the drawer and it doesn't meet IKEA flat pack standards which is CNC machined or something like that. However, I had no problems with the old slides. It turned out that the back of the hole was about 1/16 inch narrower than the front. Almost didn't work until I figured it out. I don't find these slides light or flimsy like some other reviewers have said. They are a good weight and seem to work well. One thing to note is that the soft close mechanism takes up a lot of space near the back of the rails, so the screws are pushed forward (compared to my old rails, shall we say). As a result, the back of the slide will try to float a little. There is another mounting hole in the far rear corner, next to the dampening mechanism. That.