The 0131-P1NN-418-100N from IntelliConnect is a Between Series RF Adapter with Contact Resistance 5 mOhms(Center), 0.5 mOhms(Intermediate), 0.5 mOhms(Outer), Insulation Resistance 5000 MOhms, Voltage Rating 400 Vrms. More details for 0131-P1NN-418-100N can be seen below.