When I went looking for floor protectors, I was looking for something softish to put over the end of the metal feet of the music stand so that moving the stand over the floor wouldn't scratch the wood or the tiles.
But these little feet tips are themselves made of a really hard plastic, so they don't really do what I was hoping. They haven't caused any scratches or anything, but they still make that horrible scraping noise when the stand is bumped.
Having said that, they're still a well made product, easy to put on and they stay on.
Just not what I was looking for.