The QRJ2-18000-31 from Qualwave is a Coaxial Rotary Joint with Frequency DC to 5 GHz / DC to 18 GHz, Average Power 50 W, Peak Power 3000 W, Insertion Loss 0.48 to 0.98 dB, Operating Temperature -40 to 70 Degree C. More details for QRJ2-18000-31 can be seen below.