Pro-Shot's new 1-Step formula cleans bores fouled with lead, copper, powder and plastic wad fouling and lessens repeat fouling and residue buildup. Contains special additives which lubricate and provide a corrosion barrier for superior rust protection. 1-Step is a proprietary, non-hazardous, environmentally friendly formula which should be used with patches and bore brushes. Easy one-product cleaning and lubricating.