Camera Lens Bayonet Mount Ring, For Canon EF 24-70mm F2.8 L USM, For Canon EF 24-105mm f/4 L IS USM, For Canon EF 24-105mm f/4L IS II USM, For Canon RF 70-200mm F4 L IS USM, For Canon RF 70-200mm F2.8 L IS USM

1. Replacement for your defective or breakdown part.
2. Design for Canon lens. the design makes it firmly on the lens.
3. You can put one lens reverse mount on another lens (front).
4. Completely fit and work.
5. Professional installation is highly recommended. We will not be responsible for any damages to your camera that you may cause during the changing of replacement parts.