Latest water technology. This super combo set (treats both hot and cold water systems) was developed for our customers with large homes. Thousands have been sold to customers with bad water in Australia, Middle East, Europe, South America and all US States especially Western and Florida. A heavy 6 extra-large magnet set of quality magnetic water softener/conditioner and smaller Duplex 2 heavy magnet unit which very simply straps to your cold/hot water pipes in a house. Anybody can install it. Solid steel with superior potency magnets. Not all neodymium magnets are the same potency though they may be the exact same size. And since they create a magnetic field within the inlet pipe which performs the conditioning function, this difference is critical. Water contains iron & minerals, and the worst the water, the more minerals translating to hard water. Hard water refers to water with high mineral content within. This system uses basic physics to change the molecular structure status of your water, as calcium and other minerals remain suspended in the water while it flows, causing them not to stick to dishes, skin, fixtures and pipe walls. Those minerals still suspended, completely go through your plumbing system and out the drain instead of being deposited into your fixtures, pipes, dishes, and on your skin. USA made. There are other units with ceramic magnets, which have a tenth or less of the power or they are selling for considerably more money units that do not have the total magnetic power of this unit, which is generated by 6, not 2, high-grade neodymium magnets. The rating of the magnetic force is critical and there are none close to this for price. Installation is simple-use the included nylon/velcro strap included to fasten it. Will fit any size household water inlet pipe made of copper, iron, or pvc/abs. There's a difference, and nothing even comes close for the price. Never needs servicing, changing or maintenance. 10 year warranty.