Features: Solid full metal mount lens adapter allows Nikon F/ AI /AF-S /G Mount Lens to fit on Canon EOSR RF mount series Full Frame Mirrorless Camera body. Supports AV / M mode. There is no electronic element in the adapter, aperture and focusing must be manually control. Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. Material: Aluminium and brass.