Nikon Field Scope Eyepiece Zoom Lens 20-60X, 25-75X MC2 for ED50, ED82 [New]
25-75X when attached to ED82 series. Fieldscope ED82/ED82-A, Fieldscope ED III/ED III-A, Fieldscope III/III-A, Fieldscope ED50, Fieldscope ED50-A. 13-40X when attached to ED50 series. 20-60X eyepiece for fieldscopes.