M42 Helicoid for Fuji X mount cameras  type_Black & White 6 II USM is a

6 II USM is a compact telephoto zoom lens suitable for film or digital EF-mount cameras

the Aerochrome-loving public

There is some paint wear on the base

and a genuine Match Technical Thumbs Up grip

6D is a Nikon F mount zoom lens

M42 Helicoid for Fuji X mount cameras &nbsptype_Black & White 6 II USM is aThis adapter lets you attach M42 lenses and accessories to Fujifilm X mount cameras, but you won't get infinity focus: this is mostly designed as an adjustable close up tube, or as an experimental platform for medium and large format lenses. This helicoid is about 3cm long, with about 3cm of extension. In excellent condition.