MAC3.2 Air Pumper Outlet Cap by Rugged Radios
The Pumper Cap allows you to close off individual air outlets on your pumper system. This allows you to use a 2 person pumper with a single helmet, or a 4 person pumper with 1-3 helmets.
Designed for the MAC Pumper series, but also compatible with Parker Pumper and other popular models.
Shipping only $9.99 with in the lower 48 states