The FMWMT1003 from Fairview Microwave is a Waveguide Tee with Frequency 40 to 60 GHz, Isolation 15 to 25 dB, Insertion Loss 0.8 dB, Isolation(Co-linear arms) 15 dB (Collinear), Isolation(E & H arms) 25 dB (E-H). Tags: Magic Tee. More details for FMWMT1003 can be seen below.