BALL JOINT INNER, PIN BALL JOINT, INNER BEARING TUBE, OUTER BEARING TUBE CNC machiningMachining ... drilling, tapping processing, CNC precision machining service2. Material: Carbon steel, Steel alloy, stainless steel, aluminum, brass, bronze, plastic (PVC, POM etc.)3 ... in supplying OEM machining service in accordance with customers’ drawing and requirement with low price but good quality and service ...