Ofgepi Adapter Ring Suitable for Filter, Close-Up Lens and Filter Thread Size Lens Bower 49-77mm Step-Up Adapter Ring easily screws onto the front of a 49mm lens and converts to 77mm accessory items (filter, hood, flash, lens converter, etc) Package Includes: 10 x step up adapter ring Package contents are not included, other products are not included in this listing depending on photographic and display The color and size of the websites website may vary slightly The measurement allowed error is 0.4-1.2 inches (1-3 cm).