The 134-1019-471 from Cinch Connectivity Solutions is a Between Series RF Adapter with Contact Resistance 1 to 8 mOhms, Frequency DC to 26.5 GHz, Insertion Loss 0.1 dB, Mating Cycles 500 Cycles, Insulation Resistance 10000 MOhms. More details for 134-1019-471 can be seen below.