The 37_MMBX-SMA-50-1/111_NE from HUBER+SUHNER is a Between Series RF Adapter with Return Loss 14 to 31 dB, Frequency DC to 12.4 GHz, Mating Cycles 500 Cycles, Temperature -55 to 155 Degree C. More details for 37_MMBX-SMA-50-1/111_NE can be seen below.