Dirty Bore Gun Cleaner blend is an extremely effective Bio-Based cleaning solution designed to encapsulate all lead and carbon fouling, making it not possible to readhere to the bore. Dirty Bore can be left in bore to act as a lubricant. In addition to bore cleaner, it is also an all purpose cleaner safe to use on any surface including metal, aluminum, fabrics, vinyl, rubber, painted surfaces, glass, and leather. This item is a 12 pack of 4 oz. bottles.