SPOC 12-03 is 12mm O.D tubing x R, PT, BSPT 3/8 thread stainless steel hex socket head male connector push in air fittings, designed to be round shaped body with internal hexagon which makes it possible to be installed in the closely spaced, tightening with a hexagon wrench. 12mm x R 3/8 stainless steel round male straight pneumatic air fittings are made entirely of high grade stainless steel material, making it suitable for not only chemical-involved applications, but also for high temperature and high pressure environment, widely used in food and pharmaceutical applications.