The kleen-bore less lethal weapons care system was developed for the unique 37/40mm gas/grenade launchers and 12ga riot shotguns.The kit includes: 3-piece large diameter aluminum cleaning rod; 37/40mm heavy-duty phosphor bronze bore brush; 37/40mm heavy-duty cotton bore mop; 12ga phosphor bronze bore brush; 12ga cotton bore mop; 12ga shotgun jag; double end nylon utility gun brush; 2 oz pro-shot 1 step mil-spec clp bottle; 2 oz pro-shot pro clean spray gun cleaner; silicone cloth; cotton flannel wipe cloth.Caliber Or Gauge: 37/40mm; 12 GaugePieces: 1 KitBristle Type: Bronze, NylonIncludes: Brush/Mop/Jag/Rod