1)Material: Al, Cu. Insert into Plastic products in order to fix firmly. 2) High precision metal machining parts High precision metal parts; machined parts; milling parts; plastic insert 1) High precision metal machining parts.2) Min Tolerance: +/- 0.01mm.3) Surface treatment: Black; Zinc, Nickel, powder coating, sand blasting etc4) Certification: ISO16949, ISO9001, ISO14001, ISO13485.