Generic 46-49mm Step up Adapter Ring 46mm Lens to 49mm Metal Filter Kit Includes: Generic 46-49mm Step Up Adapter Ring NOTE: This kit is compatible with all 46mm 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. Manufactured by a professional team for photography enthusiasts to provide a very exciting experience. 100% Satisfaction Guaranteed. 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. 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.