The Metal Swivel Elbow 12mm x 3/8" M is a high-quality fitting used to connect two tubes or pipes at a 90-degree angle. It features a 12mm connection on one end for use with 12mm outer diameter tubing, and a 3/8" male thread (M) on the other end, which allows it to connect to female-threaded components or ports. The swivel design provides flexibility, enabling the elbow to rotate, which is especially useful when working in tight spaces or needing to adjust the angle without disconnecting the fitting. This type of fitting is commonly used in pneumatic, hydraulic, and fluid transfer systems for leak-free and secure connections.