The Hoppe's No. 9 Bore Cleaner is the most universally used solvent for removing carbon powder lead and metal fouling while preventing rust on firearms.Hoppe's No. 9 Bore Cleaner - 10 pack of 1 pint (16 oz) bottlesChild-proof safety caps for secure storageRemoves carbon powder lead and metal fouling effectivelyPrevents rust and corrosion on firearm componentsQuick super-efficient safe and easy to use formulaFlows freely and penetrates rapidly for thorough cleaningA trusted favorite with sportsmen throughout the world this professional-grade bore cleaner ensures your firearms stay clean and well-maintained for optimal performance and longevity.