The very latest hydro-magnetic technology for water treatment. No salt needed. Larger Extra heavy Ultra-Powerful Neodymium Magnets more power for $30 than any competitor. Installs in minutes Without tools-Anyone can install. No plumber or modifications needed. Reduces minerals, calcium, lime scale in water causing hard water spots. USA made solid steel versus China-made plastic polymer encased competition., Weight: 0.55 pounds, Manufacturer: Magnetic Water Technology