Pneuflex's SPM 1/2 is stainless steel 316 bulkhead union straight push in fittings with which hose push-in connectors at both ends is 1/2 inch, designed to connect two 1/2 inch O.D pneumatic tubes through a panel or other barrier and fixed by two bulkheads. All bodies are making using of high grade 316 stainless steel, which offers high corrosion and chemical resistance.