Gates MegaClean Starter Kit contains everything you need to remove dirt from the inside out w/ the help of pressurized launchers & compatible nozzles. Foam projectiles sweep through the inside surface of the hose, taking fine particles of loose dirt & other contaminants w/ them. At 20-30% larger than the hose I.D., these projectiles leave nothing behind but a hose that is truly clean. Starter Kit contains: