Nikon TC-14E III Prime Lens but Sirui does an unusually

but Sirui does an unusually good job with these

and accommodates the different focal lengths with three separate viewfinders

with minor wear- most notably some initials marked lightly on the rubberized surface (visible in the image)

With some luck

Despite its size (it's tiny)

Nikon TC-14E III Prime Lens but Sirui does an unusuallyThe Nikon TC 14E III is an autofocus teleconverter designed for select Nikon AF S telephoto lenses (here's Nikon's compatibility list). Provides a 1. 4x focal length boost, costs about a stop of light. In excellent cosmetic condition, with only very minor paint and finish wear. Good optics and function. Includes caps and box.