High Precision Engine Part 1.Material:Brass copper 2.Tolerance:0.01mm 3.Certification: ... ,aluminum ,brass, bronze,copper, according to customer request6)Products : precision parts ;mechanical parts ;CNC machining parts (CNC milling /turning parts ;milling parts ... ,S1000, PEEK 1000, ESD225, ESD420 , ESD520HRCeramicZrO2, ESD CeramicCarbideCD 650 High Precision Engine Part