Grex GXPS-123 Private Stock Airbrush Colors, 1 Fluid Ounce, Transparent Granite Gray Revolutionary and evolutionary paint system - made from a blend of acrylics designed and formulated for performance to give you full control on every surface imaginable Private Stock can be used on all materials, ranging from textiles to wood, leather, glass, metals and plastics that include HDPE, PVC, PET, LEXAN and Polycarbonate Water-based, non-toxic and conforms to ASTM D4236 compliance standards. Uses proprietary nano-technology that results in minimal dry tip issues and smooth spray Private Stock is only made with premium ingredients and with no fillers. Only pigments of the finest quality with regards to purity, strength and performance are used Precision manufactured for accurate and repeatable mixing of an infinite color spectrum