Feature: 1. Simple Operation: Easy to install and disassemble, can be locked quickly, simple operation, and easy to use. 2. Manufacturing Material: Mount part is made of high quality aluminum alloy and plastic materials, high quality workmanship, durable and strong. 3. Equipped with Electronic Contact: Extension ring is installed between camera and lens with electronic contact, and support automatic focusing. 4. Separate Adapter Rings: Combined with 12mm and 20mm separate adapter rings, 2pcs rings can be used alone, can also be used in combination, after the installation can reduce the lens of the shortest focus distance, so as to achieve local macro effect. 5. Effective Accessory for Macro Photography: Extension ring is an effective accessory for macro photography, allowing you to easily take close up shots of small objects such as insects and flowers. Enables you to convert almost any lens to microlens at a fraction of the cost, while maintaining its original optical quality 6. Compatible Camera: Suitable for Nikon Z5 Z6 Z6II Z7 Z7II Z50 Z mount camera. Specification: Item Type: Auto Focus Macro Extension Ring Tube Set Weight: Approx.95g / 3.4oz Material: Plastic + Aluminum Alloy Compatible Camera: Suitable For Nikon Z5 Z6 Z6II Z7 Z7II Z50 Z Mount Camera . Package List: 1 x Extension Ring1 x Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the object. 3. When the image magnification ratio increases, the camera shake is easy to increase, so it is recommended to use the tripod and shutter release properly.