The 284-125-(L)-6-6 from Narda-ATM is a Flexible Waveguide with Frequency 2.60 to 3.95 GHz, Insertion Loss 0.04 dB/ft, Power 6.5 kW, Pressure 20 psig, Operating Temperature -55 to 130 Degree C. Tags: Non-Twistable. More details for 284-125-(L)-6-6 can be seen below.