2-1/2 x 1/2 Male O-Ring x Female National Pipe Straight Mechanical Swivel AdapterThe 2 1 2 x 1 2 Male O Ring x Female National Pipe Straight Mechanical Swivel Adapter is a hydraulic fitting designed to connect a male O ring boss port to a female National Pipe Straight mechanical port. The swivel design allows for easy alignment during installation without twisting the hydraulic hose or tubing, ensuring a secure and leak resistant connection in high pressure hydraulic systems. Specifications Details TYPE Male O Ring x Female