Canon FD 50mm f1.8 Chemistry type_Developer The Nikon TC-17E II is

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

9 lens and a fully mechanical shutter system

plenty of pre-drilled holes for securing the unit to various surfaces

as is a Nikon-compatible TTL radio transmitter with its own comprehensive control panel

The original leather case is included (which shows a bit more cosmetic wear)

Canon FD 50mm f1.8 Chemistry type_Developer The Nikon TC-17E II isCanon FD 50mm f1. 8 lens for the Canon FD manual focus lens mount. In good cosmetic condition, with minor wear from normal use and handling. Clean glass, smooth focusing.