Neodymium Ring Magnets for Sale D20xd4x5mm neodymium ring magnets The ring magnets on the image is produced from neodymium magnetic content. The dimensions with the neodymium ring magnets is D20xd4x5mm. With axially magnetized, the magnetic poles are on The 2 flat surface.... D12xd4x6mm uncommon earth ring magnets Rare earth magnets contain neodymi