Uprok Cap Adapter
The Uprok Cap Adapter seamlessly allows you to use all European caps male caps onto American female valve cans (ie. ny fat, universals etc to rustoleum). Each adapter comes stock with a free NY Fat Cap.
I recommend this product
I highly recommend this uproar cap adapter. Works great on Rustoleum cans allowing you to paint different thicknesses, depending on what cap is mounted on top of the cap adapter.
Good adapter bought a bunch of them and they're still all good fits all brands
The Missing Link
I don't always use Rustys, but when I do, I need these adapters. Super handy in a pinch.
These are a must if you use rusty cans and would like to use a quality and variety of caps!!