These knobs are no joke! first of all, they look WAY better in person than they do in the picture. They are made of a very sturdy plastic, and the reflectors are top notch. They just look super authentic. I think I may have broken one as I was pushing it on, but whatever I did it was not a problem. Just make sure you have to hole properly over the pot and be gentle (but not too gentle) as you push down. It is probably best to push down on the reflector rather than the sides where the numbers are. I got these for my Epiphone Les Paul custom, which was super fancy except for the generic black speed knobs. I was not sure how much a difference new knobs would really make and if it was worth spending the money, but having gotten them now, I could kick myself for not getting them sooner. I have gotten many Musiclily products now and none of them have disappointed. Cheap products that look and perform way better than they should for the price. I saw one comment that said the legends are upside down (I think they meant "tone" and "volume"). When I have the settings on ten, they are right side up for me looking down as I play. I'm not sure if that is as it should be, but technically it makes more sense, and honestly it does not really matter. If I want more of these knobs, I know just where to go.