Feature:1. Free Magnification: The auto focus macro extension tube is equipped with 12mm and 24mm tubes, which can be used alone or connected together to obtain different magnification through different combinations.2. Pure Copper Contact: The metal contacts are made of all copper, which not only does not lose the image quality when entering the lens, but also supports automatic focusing and automatic exposure functions.3. Rugged and Durable: The shell is made of aluminum alloy, which is lighter and has better protection effect. The front and rear protective covers can effectively protect the lens from wear and tear.4. Macro Photography: With a lens adapter, your for Nikon camera can use a normal lens to meet your needs for shooting macro objects without requiring a macro lens.5. Z Mount: The Z mount is 1:1 designed according to for Nikon cameras, and supports models such as for Z5 Z6 Z7 Z50 Z62 Z72. The installation is smooth and does not get stuck.Specification:Item Type: 12mm 24mm Auto Focus Macro Extension Tube Ring SetMaterial: Aluminum Alloy, CopperWeight: Approx. 206g / 7.3ozMount Type: Z MountExtension Tube Specification: 12mm And 24mmApplicable Lens Brand: Suitable For NikonApplicable Models: Suitable For Nikon Z5 Z6 Z6II Z7 Z7II Z50, etc..Package List:1 x 12mm And 24mm Extension Tube Kit 2 x Protective Cover (Installed)