This Magnetic Plate is a special series magnetic plate with up to 5500 gauss Magnetic Field on the surface of the magnet. It has high intensity magnetic field. It is not only ferro magnetic materials. It is also effective on CrNi Grinding Balls and Mn Alloyed Bit Drillers. It has capacity up to 30 cm. It is also very effective from 10 cm for micronized sizes of iron parts.