This 1/2 lb. cleaning system replaces over 3 lbs. of conventional gear. The shotgun bore can be cleaned on the line while shooting without disassembly. The Patch Savers make it easy for your swab to fit any size shotgun from. 410 to 12/10 gauge, and they help provide a snug 360 degree fit as the patch travels through the bore and out the muzzle.