The look, shape and fit of these knobs is spot on. I'm very happy with them. I will say this though for people considering getting them in red to match the SAMPLER and AUTOTUNE buttons on their AX60's, the red these come in is considerably lighter, brighter and pinker than those buttons.
I decided to go red because grey (like the original caps) wasn't a given option, and the three slider caps I was replacing are all kinda "special" functions where it made sense they be a different colour from the rest of the caps. That said, if I was ordering them again, I think the least noticeable options would be to go with black caps. They'll just blend in and disappear.