This HYDROLICO fitting is a 90-degree female elbow designed for connecting tubes and creating angled connections in your pneumatic or fluid systems. It is specifically engineered for 4mm tubing and features an M5 thread for secure attachment.The HYDROLICO ZPLF04-M5 is a 90-degree female elbow fitting suitable for 4mm diameter tubing and equipped with an M5 thread. This fitting allows for a 90-degree change in direction for fluid or pneumatic lines.