Proper cleaning is key to keeping any black powder firearm looking good and shooting well. CVA Barrel Blaster is a series of solvents and rust preventatives specially formulated for black powder firearms. These patches are pre-saturated with rust preventative to make cleaning easy. After cleaning thoroughly with cleaning solvent and drying the bore with a patch, run a couple of these patches through the bore to keep it shiny and rust-free. Also perfect for preventing rust on exterior metal surfaces of your firearm. FeaturesPre-saturated with rust preventative to season and protect your black powder firearmsConvenient re-sealable jar100 Cleaning PatchesCompatible with .45 to .54 calibers