90* Mjic X Male Metric Adj Elb

On the JIC side, it is a male 9/16 - 18 UNF thread, listed as a 3/8 inch JIC size. The other end is a male metric M18 x 1.5, so it is meant to adapt between those two specific male thread types in a 90 degree elbow.

This 90-degree elbow fitting is constructed from high-quality steel, which helps ensure it can handle demanding conditions and pressure spikes in hydraulic systems.

Yeah, that's exactly the kind of crossover situation this fitting handles. One end is a male JIC 9/16-18 UNF, which is your standard 37-degree flare connection for JIC lines. The other end is a male M18 x 1.5 metric thread. So if your block has a female metric port and your hose or tube assembly terminates in a female JIC swivel, this elbow bridges that gap at a 90-degree angle. Steel construction, so it holds up in working hydraulic environments without a lot of fuss.