Hoppe's No. 9, 13-Piece Brass Jag Kit Compatible rods Cleaning rod System and other Clean a multitude of weapons Muzzle for the deepest clean Use to push patches A cleaning jag is an effective means of cleaning a barrel Provides even contact on all sides of the bore. Holds the patch securely. Includes .17, .22, .270, .30, .33, .375, .40, .44, .45, and .50 caliber brass jags