NAME: AIR COMPRESSOR PISTON RING BRAND: JIN LING DIAMETER :42, 47, 48, 51, 52, 54, 55,61.9, 62, 64 , ... is availablePiston ring type: diesel &gas oil engine ,air compressor and engineering machinery gas engine Diameter (mm) : 42, 47, 48, 51, 52, 54 ...