The 28-125-(L)-6-6 from Narda-ATM is a Flexible Waveguide with Frequency 26.5 to 40 GHz, Insertion Loss 0.6 dB/ft, Power 0.1 kW, Pressure 45 psig, Operating Temperature -55 to 130 Degree C. Tags: Non-Twistable. More details for 28-125-(L)-6-6 can be seen below.