The Tipton Ultra Cleaning Jag Set 13-Piece Threaded Nickel Plated Brass provides a variety of cleaning jags for cleaning a whole collection of firearms. Bore solvents can react to your cleaning jag as they remove copper fouling, but the Tipton Ultra Cleaning Jag's patented protective process shields it from bore solvents for a long life and improved cleaning.Features.17, .20, .22, .243/6mm, .25/6.5mm, .270/7mm, .30, .338/8mm, .35/9mm, .375, .40, .44 and .45 jags Plastic storage box with holes marked for each caliber jag.17 jag has 5-40 thread All other jags have 8-32 thread