The CCES-12-18 from ESJ Technology is a RF & Microwave Circulator with Frequency 12 to 18 GHz, Average Power Forward 60 W, Insertion Loss 0.5 dB, Isolation 18 dB, Operating Temperature -30 to 70 Degree C. Tags: Coaxial Circulator. More details for CCES-12-18 can be seen below.