This is a special blend of cleaning solvent. Safely penetrates the steels molecular pores to clean all types of fouling. It also conditions the bore to help prevent future fouling and can improve accuracy and reliability. Can cut your cleaning time by up to 80%. Nothing on the market cleans deeper or faster! Most powerful copper, lead, & powder solvents available today. Contains ammonia for maximum effectiveness. Conditions your bore to resist fouling and make cleaning easier.