The AD-4310J225P-1 from Amphenol RF is a Between Series RF Adapter with Return Loss 25 to 30 dB, PIM -166 dBc @ 2 x 43 dBm, Frequency DC to 6 GHz, Mating Cycles 100 Cycles, Insulation Resistance 5000 Mohms. More details for AD-4310J225P-1 can be seen below.