The 134-1001-451 from Cinch Connectivity Solutions is a Between Series RF Adapter with Frequency DC to 6 GHz, Mating Cycles 500 Cycles, Insulation Resistance 1000 MOhms, Temperature -65 to 165 Degree C, Voltage Rating 1000 Vrms(Dielectric Withstanding). More details for 134-1001-451 can be seen below.