Maymom Valve Replacements ONLY for Retired Freemie Open System Cups. Replaces Freemie Open System Duckbills or Freemie Open System Valves. (4 pc): NOT for Freemie Closed System Valves
| Country | USA |
| Brand | Rutgers University Press |
| Manufacturer | Rutgers University Press |
| Binding | Paperback |
| Color | Green |
| UnitCount | 1 |
| EANs | 9780813526638 |
| ReleaseDate | 0000-00-00 |