NdFeB Magnet, Used in Wind Turbines, Drives, Speakers and Motors NdFeB MagnetGrade: 35Dimensions: 40 x 12 x 4 to 3.5/6.8mmCoating: niExcellent resistance to demagnetization and corrosionPassed: ISO 9001:2000, RoSHCustomer's specifications are welcome 40 x 12 x 4 to 3.5/6.8mm Countersink shape NdFeB magnets