30mm (1.18") diameter disc magnets are at the larger end of our disc magnet range. Our 30mm (1.18") diameter disc magnets include strong neodymium magnets, high operating temperature samarium cobalt magnets and great value ceramic disc magnets. Because of their strength, 30mm (1.18") diameter neodymium magnets are more commonly used in engineering and manufacturing, including our incredible N52 grade neodymium magnet made. Also in this section you will find great value ceramic magnets and colorful noticeboard magnets.