The QAB1B1 from Qualwave is a In Series RF Adapter with Frequency DC to 3 GHz, Contact Resistance 0.2 to 1.5 mOhms (Outer) / 1 to 1.5 mOhms (Center), Mating Cycles 500 Cycles, Temperature -50 to 125 Degree C, Voltage Rating 1000 to 5000 V (RMS). More details for QAB1B1 can be seen below.