This tool is portable face air grinding wheel. High efficiency,small volume ,little weight,high power ... ,little noise,operate safe SD-150 Face Air Grinding Wheel Air grinder ID ITEM UNIT PARAMETER 1 Wheel ... ×66×150(1)This tool is portable face air grinding wheel,High efficiency,small volume,little weight,high pwer,little ... shield, for operation safety. SD-150 Face Air Grinding Wheel Air grinder