It is hydrophobic coating for plastic and metal parts of all RC models. This nanotechnology liquid may coat 100% surfaces of any RC car, boat, plane or helicopter model if necessary. After carefully coating any RC model water and grease won’t be able to stick to the surfaces resulting that mud, sand, dirt and other debris won’t stick to the model either. The dirt which still may stick to the model will come off more easily because protection coating also provides easy cleaning effect. Depending on usage of RC model, surfaces will stay protected up to one year. One bottle of protective coating contains 50ml (1.7oz) which will be enough to cover up to 10 square meters (107 sq. f.). That means with one bottle it is possible to protect quite large collection of RC models.