The 19WMT_Cu from A-Info is a Waveguide Tee with Frequency 40 to 60 GHz, Isolation 30 to 40 dB, Insertion Loss 1 to 1.5 dB, Operating Temperature -55 to 85 Degree C, Storage Temperature -60 to 90 Degree C. Tags: Magic Tee. More details for 19WMT_Cu can be seen below.