... Cobalt 28 (2,17)28105009500350Neodymium N4545135001080080Neodymium 33UH331150010700180Warnings:Neodymium magnets attract each other with almost twice the force ... even small magnets will attract each other through the thickness of your finger! About NdFeB magnet:Neodymium iron boron ... speakers, cell phones, and microwave ovens, all use magnets. Magnets are used to keep kitchen cabinet doors closed, ...