Saab 900 Steel AC cut off switch / elbow pipe.  No guarantee on the sensor, but the pipe is good and solid.  No issues no leaks.  This is a common leak source in the classic 900 due to cooling system corrosion or corrosion from the outside.  This has a tiny bit of rust.  You can wire wheel it off and paint it, it would be like new.

This is a good unit.