The Primer is available in a range of basic shades most commonly used for preparing the surface of the model or miniature before starting the painting process. Primers can be applied to all surfaces, resin, PVC, brass, white metal, or wood. The primer preserves even the smallest detail of a model and enhances the adhesion of the paints applied to this base. It is recommended to apply the Primer in several layers. The product dries quickly and forms a homogeneous film of excellent strength within a few hours after application. Primers can be used directly or thinned with Vallejo Airbrush Thinner or Flow Improver. The recommended compressor settings are approximately 15-20 PSI or 0.5 to 1 kg. For the best maintenance of the airbrush, the use of Vallejo airbrush cleaner is recommended. Packaging: Available in 18 ml/0.6 fl oz bottles (with dropper) and in larger sizes of 60 ml