Features:1. Made of high quality aluminum alloy material, high strength, non-deformation, durable and long service life.2. Paint spraying surface and paint spraying matt finish inner wall, corrosion resistant and anti-rust, to avoid reflection on CMOS affecting imaging.3. Very fine workmanship, tight and smooth. Easy to assemble.4. Allow focusing to infinity, aperture priority.5. Supports manual control, manual focus and manual exposure.6. The lens mount adapter is suitable for M42 mount lens, for Nikon AI mount camera.Specification:Condition: 100% Brand NewItem Type: Lens AdapterMaterial: Aluminum AlloyColor: BlackWeight: Approx. 7gSize: 6x6x0.5cm/2.36x2.36x0.20inch(Approx.)Compatible Lens: for M42 Mount LensCompatible Camera: for Nikon AI Mount CameraPackage List:1 x Lens Mount Adapter