Hoppe's kits aren't just convenient, they're extremely well thought out.Hoppe's cleaning kits include: hoppe's no.9 solvent, 2 oz., hoppe's lubricating oil, 2.25 oz., round cotton patches, slotted ends and adapters (where appropriate), aluminum cleaning rod, a brush to fit your specific gauge.Caliber Or Gauge: 12 GaugeType: Cleaning KitSize: 12 GaPieces: 1 KitBristle Type: BronzeIncludes: Rods/Tips/Patches/ChemicalsTip Features: SlottedCase Material: Plastic BoxHazair: Yes