Features: Perfect Compatibility : Specifically for 5DIII, 5D3, 5DSR, ensuring a precise fit with original components to enhances user experience and camera functionality. Improved operate Efficiency : Features a crossing navigation button design for quick access to camera setting and option, allowing faster parameter adjustments and boosting shoot efficiency. Dust Protections : Equipped with dust proof rings to effectively block dust and debris from entering the camera interior, extending its use and maintaining optimal shoot performances. Durability & Wear Resistant : Made from quality rubber, offering excellent durability and friction resistance for long term use without wear, while maintaining smooth tactiles feedbacks. Easy Installation : User friendly design allows simple installation without professional tool, quickly restoring both functionality and aesthetics of your camera. Specifications: Component: Rubber Diameter:Approx.1.4cm/0.55in Color:Black for 5DIII/5D3 5DSR Features:Precise feedbacks,Antislip design,Easy to clean and maintain; Package Includes: 1pc Joystick Button note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.