Bore Cleaning swabs or mops are designed especially for muzzleloading firearms. The brass bases are threaded in the two standard sizes of 8x32 and 10x32 (the most popular). These sizes will fit nearly all standard ramrods and cleaning rods without using an adapter. The solid bases are drilled, then the brass wire stem is inserted thru the base and assembled. This prevents the swab from pulling off the base and becoming lost in the barrel. They may also be used in cartridge guns. Made of washable natural cotton. Can be used over and over again. Use swabs instead of cleaning patches. Use a second one for oiling the bore. Select Bore and Thread Size: