Outline caps for female valves, perfect for original female Rust-oleum or old stock American Accents and Painter's Touch cans. These caps are magical, virtually eliminating the classic Rusto valve stutter problem and also have a nice low pressure feel. Compatible with old valve Krylon, Old Spanish Montana/MTN, and most off label American brands. Can be modified to fit any Female Valves by shaving a tiny bit of material off the stem with a razor.