HIGH FLOW MEDIUM (formerly Airbrush Transparent Extender) 
GOLDEN High Flow Medium is a 100% acrylic binder system that is designed to modify GOLDEN Airbrush Colors and High Flow Acrylics for increased transparency and film hardness.
Engineered to meet the highest standards of professional airbrush illustrators, High Flow Medium possesses excellent spraying properties and is formulated to minimize tip build-up, clogging and surface defects.
High Flow Medium can be blended with GOLDEN Airbrush Colors or High Flow Acrylics in any ratio desired, allowing artists to precisely control of the transparency of the colors. These attributes are very important for techniques such as shading and smooth gradations.
High Flow Medium can also be used with any of the GOLDEN Heavy Body, Fluid, High Load, and Iridescent & Interference Acrylics.
There are volume options : 30ml, 118 ml, 473ml