Neodymium Block Magnet 50 x 15 x 15 mm N48
 
A neodymium magnet (NdFeB) is a very strong magnet magnetised in a strong magnetic field during manufacture, providing high magnetic attraction in a compact size. Compared with ferrite, neodymium provides much greater magnetic attraction. A protective surface coating helps improve durability. N48 indicates the magnetic grade. NdFeB grades commonly range from N35 to N52, with higher numbers generally indicating stronger magnets. The block shape is easy to position, provides a large contact area on flat surfaces and fits readily into a variety of holders.
 
This block magnet is intended for demanding tasks requiring very strong attachment and industrial use. Handle it with extra care. Even a small gap caused by paint, tape or clearance noticeably reduces magnetic attraction. It performs best on solid steel.
 
Warning: keep away from children. Strong attraction can cause pinching injuries, and the magnets may break. Store them with spacers. Keep them away from medical devices and objects sensitive to magnetic fields, including cards and electronics.