... face air grinding wheel. High efficiency,small volume ,little weight,high power,little noise,operate safe SD-150 Face Air Grinding Wheel Air ... kg 2.5 7 Air consumtion L/s 20 8 Noise dB ≤90 9 Outer contour size(outer diameter×thickness×inner ... portable face air grinding wheel,High efficiency,small volume,little weight,high pwer,little noise are characrteristics of the tool,(2)The tool ...