Firestone Automatic Air Command Single. Simply flip a switch and adjust the ride for various loading conditions. The single air command inflates both air springs equally through the use of a height control valve. For use with: Coil-Rite Air Bag Helper Springs Ride-Rite Air Bag Helper Springs and Sport-Rite Air Bag Helper Springs. Features of Firestone 2186 Automatic Air Command Single Includes height control valve Instantly adjust air springs Equally distributes air across springs Press a single button to change air pressure for various driving conditions Package Contents: Firestone 2186 Automatic Air Command Single Firestone 2186: Automatic Air Command Single