ΦThe disc type magnets of sintered Rare earth NdFeB Key: 1.The magnets are used specially in the line of speaker; 2.The magnets have such as D6.5?.5mm D8?mm D9.5?.5mm D12.5?.5mm D12?mm D12.5?.5mm D19?.5mm D19?mm D24?.5mm D24?mm 3. The performance of magnets be very stable.