Pasternack, a leading provider of RF, microwave and millimeter wave products, expands their waveguide product portfolio with the addition of new flexible waveguides that operate up to 40 GHz over nine frequency bands. This offering consists of 36 unique models of flexible waveguide twists ranging in size from WR-137 (as low as 5.85 GHz) to WR-28 (up to 40 GHz).