The Centalic RE75-WW is a press-in receptacle for the 75 mil (1.91 mm) grid with a wire-wrap termination. It stays in the fixture's probe plate and the spring probe seats in it, so probes can be changed without touching the harness.
It is the same 1.3 mm-hole body as the RE75-SC, finished with a wrap post rather than a solder cup — the variant to specify on a wire-wrapped fixture, where a channel is re-terminated with a wrap gun instead of a soldering iron. Note the smaller 1 mm interface pad compared with the SC version.
In Studio this receptacle is paired with the Centalic PE75-A-7.2GG (cupped), PE75-B-5.5GG (needle) and PE75-U-5.5GG (crown) probes, and with the INGUN GKS-075 217 120 A 1500.
