Feature: 1. Macro Shooting: With an auto focus macro extension tube ring, your camera can shoot macro objects with an ordinary lens without the need for a macro lens. 2. Free Magnification: The product comes with 12mm and 24mm tube rings, which can be used separately or connected together to obtain different magnifications through different combinations. 3. Pure Copper Contact: The metal contact of the adapter is made of copper, not only will not lose the image quality, but also can support the automatic focus and automatic exposure function. 4. Aluminum Alloy Shell: The shell is made of premium aluminum alloy material, which is lighter and has better protection effect. The front and rear protection covers can effectively protect the lens from wear and tear. 5. RF Standard Interface: The RF interface 1:1 in accordance with the applicable camera design, support for R5 R6 R7 R10 and other models, easy installation, no jamming. Specification: Item Type: Auto Focus Macro Extension Tube Ring Material: Aluminum alloy, copper Weight: Approx. 213g/7.5oz Applicable Models: for R5, R6, R7, R10, etc Macro Extension Tube Ring Size: 12mm and 24mm Interface Type: RF interface. Package List: 1 x 12mm and 24mm Macro Extension Tube Ring Set2 x Protective Lid (Installed)