The 229-125-(L)-2-2 from Narda-ATM is a Flexible Waveguide with Frequency 3.30 to 4.90 GHz, Insertion Loss 0.04 dB/ft, Power 4 kW, Pressure 30 psig, Operating Temperature -55 to 130 Degree C. Tags: Non-Twistable. More details for 229-125-(L)-2-2 can be seen below.