Item high quality mechanical cnc metal hardware componentsMaterialStainless Steel, Cold Rolled Steel, Aluminum, Brass, Copper, Gilding, Bronze, Kovar, Glass Sealing Alloys 42,52, NiFe 48, Nickel, Preplated materials such as Electro-Tin, Nickel, Electro-Zinc plated Steels, Titanium, Clad Materials such as Zinc Clad Aluminum.Finishver 100..