... service. 2. Various Machining Materials:Stainless steel, alloy steel, brass, bronze, copper, aluminum, plastic, or customer specified. 3 ... step; 100% inspection before shipment by micrometer, height gauge, projector measuring machine, coordinate measuring machine(CMM), ect. ... , turning lathe etc) Various materials(stainless steel, aluminum, brass, steel alloy, plastic etc) Finish: Zinc plated, Chromated ...