An excellent penetrant for loosening rusty or frozen parts, as well as a good lubricant and an effective bore cleaner. Provides long-lasting protection from rust for your firearms. Rapidly drives out moisture from metal pores and deposits a transparent coating which seals the surface with a protective film that clings tightly to all metal. Contains FPR (fingerprint remover) to wipe off corrosive fingerprints on all your firearms. 10 oz aerosol.