Feature: 1. Compatibility: Lens mount adapter is compatible for Contax, for Comtax, and other for CY for YC lenses. Compatible for NEX‑F3, NEX‑3, NEX‑C3, NEX‑5, NEX‑5C, NEX‑5N, NEX‑5A, NEX‑5T, NEX‑ 5K, NEX‑6, NEX‑7, NEX‑7K and A7, A7R, A7R2, M2, A6000, A5000 and other E mount mirrorless cameras. 2. Aluminum Alloy Material: Made of aluminum alloy with anodized oxidation process, high strength, sturdy, strong, wearproof, beautiful workmanship, rust resistant for long lasting use. 3. Versatile Functionality: Support full manual control, manual focus, manual exposure, aperture priority, anti reflective coating, and infinite focus, catering to professional photographers' needs. 4. Perfect Fit: The aluminum alloy lens mount adapter perfectly fits the camera and lens, providing a tight and secure connection. Smooth surface for effortless mount. It is easy to install and remove. 5. Compact and Portable: This lens mount adapter is portable and convenient to carry around. It takes up minimal space, fitting comfortably in your camera bag or pocket, ready to enhance your photography wherever you are. Specification: Item Type: Lens Mount Adapter Material: Aluminum Alloy, ABS Applicable Lenses: for Contax, for Comtax, and Other for CY for YC Lenses Applicable Cameras: for NEX‑F3, NEX‑3, NEX‑C3, NEX‑5, NEX‑5C, NEX‑5N, NEX‑5A, NEX‑5T, NEX‑ 5K, NEX‑6, NEX‑7, NEX‑7K and A7, A7R, A7R2, M2, A6000, A5000 and Other E Mount Mirrorless Cameras.. Package List: 1 x Lens Adapter Ring 1 x Lens Back Cover Note: When using the adapter ring for the first time, please enable the Shoot without lens option in the camera menu, otherwise the lens will not be recognized.