SPB 04-01 is Pneuflex's model number of 4mm tubing with R 1/8 thread stainless steel male branch tee push to connect fittings, designed to T shaped which can connect two 4mm O.D tubing to the R 1/8 female thread. The body of male branch tee stainless steel push-in fittings are made to be non corrosive and highly resistant to aggressive environment, also can be 360° swiveled after installation. 4mm x R 1/8 SS male branch tee pneumatic fittings can be used with steam, oil, water and weak corrosive fluids.