Pneuflex's SPOC 14-04 is 14mm O.D tubing x R 1/2 male thread hex socket head male connector stainless steel push in air fittings, with which round body and internal hexagon allows them to be installed anywhere space is limited, used to connect 14mm pneumatic tubing to R, PT, BSPT 1/2 female thread inline. 14mm x R 1/2 stainless steel round male straight pneumatic air fittings are composed of stainless steel body with stainless steel collet & FKM( Viton) seal, allowing steam, oil, water and other corrosive liquids flowing through.