Specification: Condition: 100% brand new Item type: Lens Adapter Ring Material: aluminium alloy Color: black Weight: Approx. 107g Type: Manual adapter ring Applicable lens: for Nikon AI mount lens Applicable camera: for Nikon Z-mount body, such for Nikon Z5/Z6/Z7/Z50 Package List: 1 x Lens Adapter Ring Note: 1. Enable "Release shutter without lens to use for MF lens with adapter. 2. If your camera indicates "The lens is not installed correctly", please modify the camera menu settings. Its usually called releasing the shutter without a lens. You can change the setting to allow.