The QABB1 from Qualwave is a Between Series RF Adapter with Contact Resistance 1 mOhms(Outer), 1.5 mOhms(Center), Frequency DC to 0.5 GHz, Mating Cycles 500 Cycles, Temperature -45 to 125 Degree C, Voltage Rating 1500 to 3000 V (RMS). More details for QABB1 can be seen below.