The strongest permanent magnets in the world are made from neodymium, of which there are many different grades. Each grade has different characteristics and strengths and the strongest grade of neodymium magnets commercially available are N55 grade. Below, you will find our range of N52 neodymium rod magnets; these magnets are incredibly strong and are also diametrically magnetised meaning that they have their north and south poles on opposite curved faces rather than the flat surfaces on either end.