We are performing a thorough alcohol cleaning and various operational checks. This is an Ai lens with a constant F4.5 aperture. [Lens Appearance] Good condition with minor scratches. [Lens Internal Condition] Slightly dusty, but clear optics. No impact on image quality. [Operational Check] MF, Zoom The focus ring moves from the minimum to infinity. The aperture ring operates fully from the widest to the smallest aperture. No stickiness on the aperture blades. Included items: As shown in the photos. 2142/25/9/Zx2 Occasionally, there may be a mistake in the mm designation of the lens in the product name. We will correct it if you point it out. Please check the images to confirm that the specifications are correct. Regarding items intended for repair or junk items: We will indicate in the description if the item is intended for repair. Please purchase these items if you wish to disassemble and repair them based on the described defects or issues. Regarding lenses and optics: Those who are familiar with used cameras have a deep understanding, but there may be some things that cannot be completely determined. We will try to make judgments based on the photos as much as possible. Regarding shipping: We may occasionally use recycled cardboard for shipping. Size... Nikon F mount Nikon Type... Wide angle Focal length (wide side)... 19-70mm Focal length (telephoto side)... 51-70mm Focal length (telephoto side)... 36-50mm Maximum aperture... 4.1-5.6