Click the Size then Click on the Color Dot, then add to Cart. the quantity is adjusted on the cart.
These are additives that improve the performance of air brushing . TopBinder can improve the wash fastness of your art, Extender is a concentrated version of Top Binder. Retarder when added to the colors slows the drying time and produces better paint flow and airbrush performance and Flow Improver keeps the airbrush needle from drying and allows more detailed airbrushing.