With the increased popularity of black powder there is a greater demand for quality cleaning products for muzzleloaders. The Otis In-Line Muzzleloader Cleaning System works with today’s modern in-lines and covers all modern calibers. Components in this kit include two .50 caliber Memory-Flex cleaning rods, a large brass slotted tip, .45 and .58 caliber black powder bore brushes, 3-inch panoply patches, and a .5oz. tube of concentrated muzzleloader cleaner. This cleaning system also contains a bore reflector/flag safety, a .5oz. tube of Otis O85 Ultra Bore Solvent, as well as brass scraper components such as the brass scraper, female rod handle, short all purpose receiver brush, and a . Mfg: Otis SPECS: Caliber/Gauge: .45 - .58 Caliber In-Line Muzzleloader. Weight: 0.750 lbs., dimensions: 4 x 4 x 2.5 inches.