Huge NdFeB Magnet Rings -----Out diameter is 240mm,inner diameter is 100mm ,the thickness is 6mm ,the thickness could be 6mm-20mm.This the biggest size of NdFeB Magnet ring we could produce .The following is the picture for the huge ring packing .

NdFeB magnet containes  Neodymium\Iron and Boron,with excellent magnetic property\abundant raw material and competive prices,NdFeB Magnet can be used as an ideal magnet in mini-motor\Permanent magnetic resonance\sound device magnetic suspension system,magnetic transmission machine and iatrical apparatus and etc.For NdFeB,its surface is usually treatd with some special methods.The surface coated include Zine\Nickel\Tin\Silver\Gold plating\Phosphor and Spray Epoxy Resin etc.