WR28 (UG599/U) Rectangular Waveguide to Circular Waveguide Taper, 0.281 inch diameter circular waveguide on UG381/U round flange, 2 inches length

WR28 (UG599/U) Rectangular Waveguide to Circular Waveguide Taper, 0.281 inch diameter circular waveguide on UG381/U round flange, 2 inches length