The RFCR2855 from RF-CI is a RF & Microwave Circulator with Frequency 2.7 to 2.9 GHz, Average Power Forward 100 W, Average Power Reverse 100 W, Peak Power 1000 W, Insertion Loss 0.2 to 0.3 dB. Tags: Drop-in Circulator. More details for RFCR2855 can be seen below.