The RFLC-404-1 from RF-Lambda is a RF & Microwave Circulator with Frequency 4 to 7 GHz, Bandwidth Bandwidth: 300 MHz, Average Power Forward 10 W, Insertion Loss 0.25 dB, Isolation 23 dB. Tags: Drop-in Circulator. More details for RFLC-404-1 can be seen below.