These filters are specially designed for use on any WWII German Panzer Gray vehicle; and on airplanes, robots, or any other dark gray surface. High quality filter Filtration is a technique that consists in applying delicate translucent layers of different colors to a painted surface in order to enliven it, to obtain chromatic depth and the impression of spaciousness. Any color applied with an airbrush can be too dull or give modest results, while a few filters will give the impression of unprecedented realism, even in the absence of other techniques. Thanks to filters, we can also better match the colors of complex camos with each other. It is recommended to use filters for lightly worn modern car models and for all those on which we will not try to get the effect of dirt, dust and rust.