Extends brake component life and reduces brake maintenance by flushing salt, sand, and corrosive material. Easy to use" "you don't need to disassemble your brakes, and it works with your garden hose. Fits 10" and 12" drum-type brakes, can easily be retrofitted to other brake systems with kit provided, and will do both sides of one axle. Fits all trailers. Made in U.S.A. Model 600PP. Mfr.'s two year limited warranty.