The 105310-01SF from Southwest Microwave is a Between Series RF Adapter with Contact Resistance 2 Mohms (Outer), 3 Mohms (Center), Frequency DC to 40 GHz, Mating Cycles 100, Insulation Resistance 5000 Mohms, Temperature -55 to 250 Degree C. More details for 105310-01SF can be seen below.