FEATURES: Fuel-Proof, Water Based Formula For Easy Clean-Ups. Many Colors For Painting Slot and R/C Car Bodies, Plastic Models. Pinewood Derby Cars, Boats, Scenery, Signs and Ceramics. It remains flexible and resists cracking, chipping and impact damage. Can be used with any air-brush that delivers over 40 to 70 psi, and Uses a MEDIUM tip.