This HYDROLICO fitting is designed for efficient fluid or air transfer, featuring a 90-degree elbow configuration to change direction in your piping system. It is suitable for 4mm diameter tubing and incorporates a 1/4 PT thread for secure connections.The HYDROLICO ZPL04-02P is a 90-degree elbow fitting. It is designed for use with 4mm diameter pipes and features a 1/4 PT thread for connection.