The JIWR14-12D-TBD7 from JQL Electronics is a Waveguide Isolator with Frequency 60.5 to 91.9 GHz, Insertion Loss 0.60-1.00 dB, Power 0.25 W(Fwd), 0.25 W(Reverse), Power fwd 0.25 W, Isolation 20-23 dB. More details for JIWR14-12D-TBD7 can be seen below.