ART IFACT 20 Pieces of 30mm x 10mm x 2mm Neodymium Magnets - N52 Rectangular Magnets - Rare Earth NdfeB Magnets - For DIY, School Project or Commercial Usage Fridge Magnet, Multipurpose Office Magnets, Magnetic Paper Holder Pack of 20  (Silver)

20 Pieces of Neodymium magnet of Rectangular / Block shape N52 Magnets with height of 30 mm, width of 10 mm and thickness/height of 2mm, coated with Nickle (Ni-Cu-Ni). Each magnet's North and South pole are on opposite sides of 30mm X 10mm faces. Rare earth neodymium magnets, also known as NdFeB magnets or Neo Magnets, are made from an alloy of neodymium, iron and boron. They are extremely strong even in small sizes. Neodymium magnets are permanent, and have a high maximum magnetic energy.