... power,little noise,operate safe SD-150 Face Air Grinding Wheel Air grinder ID ITEM UNIT PARAMETER 1 Wheel size( ... diameter×thickness×inner diameter) mm 150×6×22 2 Air pressure Mpa 0.63 3 Free speed r/min10000-10500 ... size mm Φ16 6 Net weight kg 2.5 7 Air consumtion L/s 20 8 Noise dB ≤90 9 ... mm180×66×150(1)This tool is portable face air grinding wheel,High efficiency,small volume,little weight,high pwer ...