The 7163301-323-131 from ENS Microwave is a In Series RF Adapter with Frequency DC to 6 GHz, Connector Length 40 mm, Contact Resistance 0.2 to 0.8 mOhms (Outer / Inner), Insertion Loss 0.05 to 0.15 dB, Insulation Resistance 10000 MOhms. More details for 7163301-323-131 can be seen below.