I will give you the best solution. Orange Hobby. AMK Models.
Harder & Steenbeck Infinity CR Plus 2in1 Airbrush 2 Cups with Lids 126544 by SprayGunner
Harder Steenbeck Airbrush Parts — Midwest Airbrush Supply Co
Accessories - Harder & Steenbeck Airbrush
Handle Extension for Harder & Steenbeck airbrushes - Everything Airbrush
Handle Extension for Harder & Steenbeck airbrushes - Everything Airbrush
Accessories - Harder & Steenbeck Airbrush
Harder and Steenbeck Air Hose 1/8 with quick coupling and air valve 123983 : Arts, Crafts & Sewing
Just like the Single-brush version, these dual airbrush holders are sturdy, heavy, stable and well, really freak'n cool :)
Harder & Steenbeck Dual Airbrush Holder/Air Manifold | Model Paint Solutions
Harder and Steenbeck parts for Evolution