The QAS6 from Qualwave is a Between Series RF Adapter with Contact Resistance 2.5 mOhms(Outer), 5 mOhms(Center), Frequency DC to 6 GHz, Mating Cycles 500 Cycles, Temperature -65 to 165 Degree C, Voltage Rating 250 to 750 V (RMS). More details for QAS6 can be seen below.