material：1.2085
details：CNC、Grinding、wire cutting、slow wire、Tolerance Assurance for Irregular Profiles
precision：parallelism 0.01mm、Ra0.8、φ167.5（Dimensional tolerance of 0.025mm and Positional tolerance0.025）、φ4H7(Positional tolerance φ0.025mm)、Dimensions Ø168±0.05*Ø155G7*42
