The Model SWG-12020-FB-F from SAGE Millimeter is an E-Bend flexible waveguide section with a WR-12 waveguide and UG-387/U flange. It has a polysulfide rubber jacket for robustness and has been designed to maintain electrical performance even when bent for long periods of time. The waveguide has low insertion loss in the frequency range of 60 to 90 GHz. Various standard and custom length options are available under different model numbers. This particular model number is 2 inches (50.8 mm) in length.