piston ring for MITSUBISHI, 8DC9 the size is as follow :: 135mm*3.306+3+3+4, the material: nodular iron ,cast iron piston ring for MITSUBISHI, 8DC9the size is as follow :135mm*3.306+3+3+4 ,8cylinder a set, 4 pieces/cylinderthe material: nodular iron ,cast iron.the treatment : chroming , phosphating and so on.what's more, we also can produce by your samples. the same as yours.looking forward to ...