Three Stages 4.0Mpa Air Compressor THREE STAGES 4.0MPA AIR COMPRESSOR SSA series medium-pressure air compressor is air cooled, oil lubrication, four rows, S-shaped, three stages compression, single effect piston air compressor. 1.Model: SSA-120 2.Cylinder: Dim×Pcs Φ120mm×2 Φ100mm×1 Φ55mm×1