20PCS Neodymium Rod Magnet 3mm x 4mm N35 Reed Switch Magic Craft

20PCS Neodymium Rod Magnet 3mm x 4mm N35 Reed Switch Magic CraftDescription Neodymium chemical symbol Nd is element 60 on the periodic table It is a rare earth metal and forms one of the Lanthanides series When added to Iron Fe and Boron B chemical formula Nd14Fe21B the resultant magnets are the strongest magnets currently available Neodymium magnets are sometimes known as Neo Neod or NIB magnets Neodymium magnets are usually coated Nickel Copper Nickel plating to prevent the iron from rusting Feature Shape rodSize 3x4mmMaterial NDFEB N35Application Smaller magnets are often used for jewellery clasps magnetic therapy jewellery magnetic earrings fridge magnets model train connectors war gaming models motors science projects etc Characteristics Having high magnetic properties good timestability and lower temperature coefficient WARNING Super strong magnets please be careful with pick and place we would not recommend this magnet be used by children under 5 without supervision Package included 20 x N35 Neodymium rod magnets