Cap adaptor for all your hardware store paints like Rustoleum and Krylon. This adaptor has been a life saver for many of our pieces! Male caps sit perfectly in the rubber valve component. No unwanted leakage.
UPROK adapters are also known as "wingtip adaptors" due to the unique protruding wings on either side of the valve. These special wings allow for mess-free application and removal of the adaptor.