Quantic PMI Model No. EQL-26D5G40G-1D5DB-292MF is a 26.5 to 40.0 GHz, Passive Amplitude Equalizer with a negative slope.  This Equalizer has a maximum input power of 0.5 W, a maximum VSWR of 2.0:1, a maximum insertion loss of 1.5 dB, and an amplitude accuracy of ±0.5 dB, has 2.92mm male/female connectors, and the housing size is 1.10" x 0.67" x 0.22". https://www.pmi-rf.com/product-details/eql-26d5g40g-1d5db-292mf