Pneuflex's SPC 04-02 is stainless steel male straight connector which is used to connect 4mm O.D tubing to a R 1/4 female thread. 4 mm O.D tubing x R, BSPT, PT 1/4 thread stainless steel male connector | male straight push in fitting is suitable for use with air, water, oil and steam in high temperature and wash-down applications.