The MMCCC210A from Mesa Microwave is a RF & Microwave Circulator with Frequency 4 to 8 GHz, Bandwidth 4000 MHz, Average Power Forward 60 W, Average Power Reverse 60 W, Insertion Loss 0.6 dB. Tags: Module with Connectors, Coaxial Circulator. More details for MMCCC210A can be seen below.