Unit UFC-2020A Mass Flow Controller, N2, 20 SLM, Used

“Surplus material, working when removed and good condition. These units have various fittings attached aside from just what is pictured. Some have two 1/4" MVCR Fittings, some are missing the fittings and some have one 1/4" and one 1/2" MVCR fittings. If you have a preference, please specify”