Tipton Bore Brush Sets are a new concept in firearms maintenance. Conveniently packaged caliber and gauge-specific sets of brushes means you always have the right brush at hand. Because they are caliber and gauge-specific you can be assured of an optimum fit to your firearm?s bore for efficient and thorough cleaning. Contained in a durable hinged box with marked cavities it?s easy to select the correct brush for your particular application. Bronze brushes are made from premium phosphor bronze for long life and cleaning power. Threads fit most popular brands of cleaning rods (8-32 for Rifle and Pistol except for 17 and 20 caliber which is threaded 5-40) and 5/16-27 for Shotguns. Pistol set contains 8 brushes (22-47/48 caliber).