CMS Magnetics N42 2" x 2" x 1" Block, Package of 1 Neodymium Magnets Made of the Highest Quality Neodymium, Iron, and Boron Magnetic Blend Using State of the Art Manufacturing Technology. Grade N42, With an Extremely Strong Pulling Force of 195 Lbs per Magnet. Magnetized Through the 1" Thickness, the Poles Are on the 2" X 2" Surfaces. Nickel-Copper-Nickel Triple Layer Coating for Superior Durability and Corrosion Resistance Lots of Uses at Home and Business as Holding and Retrieving Device, Stud Finder, Kids' Science Education and Science Projects