... Zamak 4, Zamak 5, Zamak 12; 2) Surface Treatment: high quality polish, plating3) Dimension: 35 x 153 mm4) Tolerance: +/-0. ... TPR, TPU, TPE, HDPE, PMMA) etc.5) Surface Treatment: High quality polish, powder coating, Chrome/Nickel/Zinc(white, blue, yellow, black ... Anodize, electrophoresis, sandblasting etc...6) Tolerance: +/- 0.0005inch, also accord with GB6414 Zinc die casting bathroom shower accessory