The SMC-176510 from Scientific Microwave Corporation is a Waveguide Tee with Frequency 1.45 to 2.20 GHz, Isolation 20 to 30 dB, Isolation(Co-linear arms) 20 dB, Isolation(E & H arms) 30 dB. Tags: Magic Tee. More details for SMC-176510 can be seen below.