The 1.85/2.92-KK from Talent Microwave Inc is a Between Series RF Adapter with Frequency DC to 40 GHz, Insertion Loss 0 to 0.316 dB, Insulation Resistance 5000 MOhms, Temperature -55 to 165 Degree C, Voltage Rating 1000 V. More details for 1.85/2.92-KK can be seen below.