M42 to all for Nikon AF mount adapter ring Make M42 mount lenses (for Zeiss, Pentax, Praktica, Mamiya, Zenit) can be used on FOR Nikon cameras There is no ROM connection on the ring so diaphragm control of the lens is set manually It is possible to use Macro rings and other accessories Brand new, never used Made of aluminium (not plastic) color : BLACK NOTICE: Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. You can shoot with manual mode or aperture priority mode . Suitable For Nikon DSLR and Film SLR (as long as the body takes for NIKON AF lens) Package includes : M42-AI step up lens Adapter X 1pcs