I just installed them to pass speaker cables. Good quality plastic, which effectively holds the cables and "hides" them satisfactorily in the space, creating a beautiful aesthetic result (and not complaining the wife...). Easy installation even for beginners, as no screws or such are needed... Also, a variety of colors for better matching in the space (gray, for example, is excellent for passing cables through aluminum frames). Just make sure to get the right size, depending on the thickness of your cables. Initially, I had purchased the 5*5.5mm ones, which were too small to fit my cables, and then I got the right ones for my case (10*10.5mm). If it turns out that their adhesive has a long lifespan (?), then we will be talking about an extremely useful product!