More than 100 years in the gun care business has taught us a thing or two about what makes a good kit. Precisely why hunters, shooters and those in search of the perfect gift continually turn to Hoppe's. Our kits aren't just convenient, they're extremely well thought out. For all Caliber / Gauges & gauges Includes 2 oz. of famous Hoppe's No. 9 Gun Bore Cleaner.