N120 Extension Ring 25 II

The N120 Extension Ring 25 II provides 25mm of extension for your N120 port system. This extension ring mounts directly to your Nauticam housing, then accepts a dome or flat port on its forward bayonet mount. It is often needed to clear the barrel of longer prime lenses or to position zoom lenses correctly within a dome port for optimal corner sharpness. Consult the compatibility finder to confirm the required extension for your specific lens and port combination.

This extension ring features a safety lock to prevent accidental removal underwater. The bayonet mount provides a secure connection while allowing quick port changes. The robust construction maintains seal integrity at depth.