The Fat cap is great for filling in large areas and creating flared lines. They have a direct fit (no forcing required, no slant) and sprays hard and fast. The Outline Cap sprays a clean, soft thin line, which is great for outlines, highlights, and borders.
Please Note: These particular caps are FEMALE fat caps which are for the male valve system (Cans which have the stem sticking out of the can), compatible with American Accents and Painter's Touch / Painter's Touch 2X cans
They also work on original Rusto Stops Rust and the satin "decor" lines, they work on almost all Rusto products EXCEPT the Rusto Universal Line (the cans with the triggers built in that look like Fabreze).