Carl Zeiss CFi Distagon 50mm f4 T* K mount adapter 8 Macro lens is a

8 Macro lens is a high quality macro lens that provides magnification up to 1:1 (lifesize) without the use of additional extension tubes

It's pretty sweet

Machined out of solid aluminum

The Canon Lens Mount Converter P is a well made adapter that lets M42 lenses mount to Canon FD cameras

Carl Zeiss CFi Distagon 50mm f4 T* K mount adapter 8 Macro lens is aCarl Zeiss CFi Distagon 50mm f4 T* lens for Hasselblad V series cameras. In excellent condition, with clean glass, smooth focusing, clean diaphragm, and only minor cosmetic wear. A great modern wide angle lens with a floating element system. Includes B60 B70 adapter ring.