Air Filtration Units(Pneumatic Component), with same function of SMC products, with cup shield; FRL Units(Pneumatic Component, Two Points Combination), with same function of SMC products. The port thread includes 1/4"NPT, 3/8"NPT and 1/2"NPT which is for North American market, with cup shield;Guaranty pressure: 1.5MPA; Pneumatic Component