The CAK-DM-NM from Xiamen HDG Telecom Equipments is a Between Series RF Adapter with PIM -150 dBc, Contact Resistance 1 to 1.5 mOhms, Frequency DC to 3 GHz, Mating Cycles 500 Cycles, Insulation Resistance 5000 MOhms. More details for CAK-DM-NM can be seen below.