Water-based Acrylicos Vallejo Model Air paint is formulated especially for airbrushing straight from the bottle . . . no thinning or special mixing is required. Made with finely-ground pigments and airbrush-perfect viscosity, Model Air goes on smoothly and covers well, even with just a thin coat. Tiny surface details won't be obliterated, and the resulting matte finish is durable and waterproof. Non-toxic and odor-free, airbrushes clean up easily by rinsing with water. Sets include 17 ml (approx half-ounce) squeeze bottles with dropper-style tips for easy dispensing.