Protects your firearms from rust. It rapidly drives out moisture from metal pores and deposits a transparent coating which seals the surface with a protective film. Withstands 500 hours in ASTM humidity test and 96 hours in ASTM salt spray test. Also an excellent penetrant for loosening rusty or frozen parts, as well as a good lubricant and an effective bore cleaner. Contains FPR to wipe off corrosive fingerprints on all your firearms.