... Magnetic grinding machines are of simple, safe and convenient operation, low cost and long working life. Our products of grinding ... eyeglass, lock manufacturing, ornaments & jewellery, electron, artware, machinery and hardware, etc. Specifications:Outside diameter: 550*420*650mmVolume: 250*250mmVoltage ... : 12months.Available materials as following: magnetic Grinding Machine/Polishing machine BJ-200