The 50201-JJ01 from I-PEX is a In Series RF Adapter with Frequency DC to 50 GHz, Connector Length 22.38 mm, Contact Resistance 4 mOhms (Center), 2.5 mOhms (Outer), Insulation Resistance 5000 MOhms, Mating Cycles 500 Cycles. More details for 50201-JJ01 can be seen below.