The 46mm to 55mm Step-Up Filter Ring Adapter is a lens conversion ring that allows for the use of 55mm filters on lenses with a 46mm filter thread. Here are more details about this adapter: - Compatible : The adapter is compatible with a wide range of camera brands, including Canon, Nikon, Pentax, Sony, Minolta, Sigma, Samsung, Fuji, Leica, Olympus, Panasonic, and Kodak.- Model Number: The model number of this adapter is 46-55.- Function: The adapter serves as a step-up ring, allowing a lens with a 46mm filter thread size to be used with 55mm filters. This is useful if an individual has multiple lenses that require different filter sizes, as it eliminates the need to purchase multiple filters.- Material: The adapter is made of high-quality metal, which provides durability and longevity.- Easy to Use: The adapter is easy to use and can be attached to the lens in seconds by simply screwing it onto the lens thread.- Compatibility: This adapter is specifically designed for lenses with a 46mm filter thread, allowing them to be used with 55mm filters. It is important to note that this adapter is not compatible with lenses that have a larger or smaller thread size.- Size: The adapter has a size of 46-55mm, which means that it is a step-up ring that allows for the use of 55mm filters on lenses with a 46mm filter thread. In summary, the 46mm to 55mm Step-Up Filter Ring Adapter is a useful accessory for individuals who have multiple lenses with varying filter thread sizes. It is compatible with a wide range of camera brands and is made of high-quality metal, providing durability and longevity. This adapter is easy to use and allows for the use of 55mm filters on lenses with a 46mm filter thread. It is important to ensure that the lens has a 46mm filter thread before using this adapter.