These are Industrial Interchange Couplings and Plugs that were removed from MNTCE cribs.  Some are new and unused while others may show cosmetic signs of use ranging from very light to heavy.  All units have been inspected and tested for functionality.  These units are industrial interchange series so all 1/4" couplers are compatible with the listed 1/4" plugs as are the 3/8" and 1/2".  Industrial Interchange is the most common style of pneumatic coupler and all manufactures offering Industrial Interchange series parts are interchangeable. 

Photos will be of the actual couplers and their cosmetic condition.  

All parts were removed from factories and or mntce facilities and are tested for functionality.