Generic 49-52mm Filter Step Up Adapter Ring 49mm Lens to 52mm Metal for Sony NEX5 NEX7 A3000 Brand new & high quality. Solid and lightweight.Great tightness, no wobbling or cross-threading.Environmentally friendly material made of aircraft grade magnalium.Superfine frame polished with strict surface treatment. Kit Includes: Generic 49-52mm Step Up Adapter Ring Manufactured by a professional team for photography enthusiasts to provide a very exciting experience. 100% Satisfaction Guaranteed. NOTE: This kit is compatible with all 49mm lenses. Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "?" (diameter) symbol. The first number is always the lens thread size, the second number is the filter size of the accessory. If the first number is smaller, it's a step-up.