... ) Surface Treatment: high quality polish, powder coating3) Dimension: 9.6 x 5.5 x 8.8 cm4) Tolerance: +/-0 ... , turning, milling, tapping, drilling, polishing, punching, etc... 6) 3 advanced high & low temperature coating lines.7) Excellent ... black)plating, hot galvanized, painting, Anodize, electrophoresis, sandblasting etc...6) Tolerance: +/- 0.0005inch, also accord with GB6414 Precision casting ...