Feature:1. Aluminum alloy material, precise craftsmanship, durable and corrosionresistant.2. The workmanship is very exquisite, and it is closely and smoothly combined with the mount, just like the original lens mount.3. Full manual operation, manual focusing, manual adjustment of aperture, manual exposure can be achieved with the body. Aperture priority exposure, infinite focusing.4. Greatly increase the scope of application of old lenses.5. Convenient for M42 old mount lens to be installed for Canon FD mount body.Specification:Condition: 100% brand newItem type: Lens Adapter RingMaterial: aluminium alloyColor: As picture shownWeight: Approx. 33g Compatible Lens: For M42 mount lensCompatible Camera: For FD mount camera body.Features: full manual control, manual focusing, manual exposure, aperture priority, infinite focusing.Package List:1 x Lens Adapter Ring