New Staubli 1/2" NPT Female Non-Spill Flat Face Hydraulic Quick Coupler Sockets, Dry Break, Part Number CBX 12.1203, or CBX12.1203.  Each bid quantity is for One (1) Coupler Socket As Shown.  You may bid / buy any number, up to the total quantity available above.

These were purchased at a lost freight auction last year, and they are brand new in the original (Rough) factory boxes. These are top quality couplers, and their price indicates that distributors are quite proud of them.

Best we can decipher from the Staubli catalog, these mate with the following 1/2" NPT female threaded male plug (Not Included):

CBX 12.7203 (female NPT)

... and others if you don't mind BSP, ISO, and metric threads.