The RFLC-504-2 from RF-Lambda is a RF & Microwave Circulator with Frequency 6 to 10 GHz, Bandwidth Bandwidth: 600 MHz, Average Power Forward 10 W, Insertion Loss 0.4 dB, Isolation 19 dB. Tags: Drop-in Circulator. More details for RFLC-504-2 can be seen below.