PCF 04-01 female connector push to connect fitting is used to connect 4mm O.D tubing to R, PT, BSPT 1/8 male stud thread in an inline configuration. 4mm O.D tubing to R, PT, BSPT 1/8 female connector push to connect fitting is made of nickel plated brass, POM release sleeve and stainless steel tube gripping claw. 4mm tubing to R, PT, BSPT 1/8 female connector pneumatic fitting allows tubing to be connected and reconnected repeatedly without damaging the tube or fitting.