... Performance CASS8 hours 10 standard High-grade sanitary condition Product No./NameJJ-00059 / Zinc die cast with double plating for bathroom ... 12; Aluminum 6061, 6063, 7075; (Plastic: ABS, PC, PS, PP, PVC, TPR, TPU, TPE, HDPE, PMMA) etc.5) Surface Treatment ... electrophoresis, sandblasting etc...6) Tolerance: +/- 0.0005inch, also accord with GB6414 Zinc die cast with double plating for bathroom product