The WRMT-112-Cover-Brass-Iridite from Microtech Inc is a Waveguide Tee with Frequency 7.05 to 10 GHz, Isolation 16 to 30 dB, Isolation(Co-linear arms) 16 to 30 dB, Isolation(E & H arms) 16 to 30 dB. Tags: Magic Tee. More details for WRMT-112-Cover-Brass-Iridite can be seen below.