K&F CONCEPT Mount Adapter M42 to Fujifilm X Mount Compatible Lenses: M42 lenses Compatible Cameras: Fujifilm X-mount cameras I purchased this to attach old lenses like Super Takumar, and I've used it a few times since buying it new. It's in beautiful condition. K&F Concept M42-FX mount adapter FX mount High-quality adapter. K&F CONCEPT M42 mount to Fuji X FX mount m42-fx (KFFX) - Brand: K&F Concept - Model: Mount Adapter M42-FX - Compatibility: For FX mount lenses - Features: Lens mount adapter