I will never use the table that came with my RV, but there are holes in the floor that I need to fix. Between the mud, the pet hair, and the fact that I almost always hit part of my foot in some way, I had to do something. stumbled over an empty hole, so that's it. It takes a bit of pressure to get in, I very much doubt I'll ever get them out without a screwdriver, but that's fine. If you plug and unplug them regularly they will get very tight and you will likely end up damaging them, which is why I put four. But if you don't plan on ever taking them off, they fit well, do the job, and are inexpensive.