Nikon 50mm f1.8D AF Nikkor brand_Kenko and it's a lot smaller

and it's a lot smaller and lighter

the thread fitting is 1/4”-20

The Nikon TC-17EII is an autofocus teleconverter designed for select Nikon AF-S telephoto lenses (here's Nikon's compatibility list)

this one's a good contender

some surface wear from normal use

Nikon 50mm f1.8D AF Nikkor brand_Kenko and it's a lot smallerThe Nikon 50mm f1. 8D AF Nikkor is a nice, compact standard lens for film and digital Nikon F mount SLRs. The autofocusing system in this lens requires an in camera focusing motor: it will mount to non motor SLRs like the 3000 and 5000 series, but it won't autofocus. In excellent condition, with clean glass and only very minor cosmetic wear.