Magnetic Water Softener RV and Mobile Home Model Designed specifically for RV's and Mobile Home internal water systems. Extends the life of all components including pumps, water heaters, and appliances. Removes build-up and prevents further build-up of minerals. Requires no plumbing modifications. A simple 2 minute install by absolutely anyone. Solid steel, very powerful neodymium magnets, and not an ounce of plastic.