The 50201-0J01 from I-PEX is a In Series RF Adapter with Frequency DC to 50 GHz, Connector Length 21.33 mm, Contact Resistance 4 mOhms (Center), 2.5 mOhms (Outer), Insulation Resistance 5000 MOhms, Mating Cycles 500 Cycles. More details for 50201-0J01 can be seen below.