The RFLC-504-1 from RF-Lambda is a RF & Microwave Circulator with Frequency 6 to 10 GHz, Bandwidth Bandwidth: 300 MHz, Average Power Forward 10 W, Insertion Loss 0.3 dB, Isolation 21 dB. Tags: Drop-in Circulator. More details for RFLC-504-1 can be seen below.