The SMP-FS2A-645-NM from Amphenol RF is a In Series RF Adapter with Frequency DC to 40 GHz, Connector Length 6.45 mm, Mating Cycles 100 to 1000 Cycles, Return Loss -30 to -14 dB, Temperature -65 to 165 Degree C. More details for SMP-FS2A-645-NM can be seen below.