This is a hydrophobic coating for plastic and metal parts for RC model cars. This nanotechnology liquid coat 100% Surfaces of RC Model cars, Boats, Helicopters planes. After each careful coating, mud and dirt will not or hardly stick to the parts and surfaces. The dirt that does stick will be easier to remove afterwards. This coating can remain on the parts for up to 1 year. With 1 package you can protect up to 10M² surface or a large collection of RC models.