These caps are very nice for fills. I've used them on Krylon and Rusto paint. It works well with both, but it works much better on the Rusto, hence the name Rusto Fatcap. Very quality caps.
This cap isn't as thin as people make it out to be. I used it on a molotow can, I found that the stock molotow cap was much thinner than this one. It does a really nice medium line though.
eh.its alrite.
but at first it starts off real good but then if you use it alot the paint might get sucky but it wont really last but you will be able to hit up with it a couple of times. whats with these people that want to keep mops around for 6 months?