(4) 1 ODx1/4 IDx1/4 Rare Earth Neodymium Ring Magnet Grade N42 1×1/4×1/4
Grade N42, Stronger than N40, N38 and N35. Neodymium Magnet Information. Neodymium magnets rare earth NdFeB are the world’s strongest magnets. All magnets are not created equal! All of our Neodymium Iron Boron magnets are manufactured in ISO certified factory.