The PEWMT1004 from Pasternack Enterprises Inc is a Waveguide Tee with Frequency 33 to 50 GHz, Isolation 15 to 25 dB, Insertion Loss 0.7 dB, Isolation(Co-linear arms) 15 to 25 dB, Isolation(E & H arms) 15 to 25 dB. Tags: Magic Tee. More details for PEWMT1004 can be seen below.