... Item DescriptionNameCNC machining part:Copper machining part:Precision machining partMaterialBrass C37710/CuZn39Pb2,C36000,C37700Surface TreatmentZinc ... fittings, elbow, tee, nut; Auto-lathe turning precision part: precision electronic parts, fasteners, and other jeweler accessories.(3 ... Rockwell hardness tester, hydraulic valve test bench, micrometer, thread ring gauge and plug gauge and other ...