customized heavy duty coiled spring pin 1. cnc turning, cnc center machining 2. material aluminum alloy 3. high precision customized heavy duty coiled spring pin Product Typecustomized heavy duty coiled spring pinMaterialaluminum alloyProcessingCNC turning, milling, cnc centerSurface finishChrome plating, zinc plating, blackening, Nickel plating, Electrophoresis, AnodizationColorMetal colors ...