The big shot cleaning kit cleans the majority of all rifles & pistols,.17 to.50 cal., and shotguns,.410 to 12 gauge.The durable storage case has stainless steel lid, rust-proof stainless steel and durable polypropylene case that will last for years.Caliber Or Gauge: Multi-CaliberType: Cleaning KitSize: .17-.45 CalPieces: 89 PiecesBristle Type: BronzeIncludes: 14" Tall Shot Shell CaseCase Material: Plastic