The 5MAM06S-NCM-004 from Shenzhen Superlink Technology is a Between Series RF Adapter with Contact Resistance 0.2 to 3 mOhms, Frequency DC to 12 GHz, Insertion Loss 0.17 dB, Mating Cycles 500 Cycles, Insulation Resistance 5000 MOhms. More details for 5MAM06S-NCM-004 can be seen below.