The SMC-176051 from Scientific Microwave Corporation is a Waveguide Tee with Frequency 15 to 22 GHz, Isolation 15 to 35 dB, Isolation(Co-linear arms) 15 to 20 dB, Isolation(E & H arms) 35 dB. Tags: Magic Tee. More details for SMC-176051 can be seen below.