Top Brand Step Up Ring 55-58mm Lens Filter Size Adapter Step rings allow the attachment of different size filters and accessories to a lens. The 55-58mm Step Up Adapter Ring made of anodized aluminum which is a hardness, lightness and durable. Metal Step Up Ring allows you to screw it to any 55mm lens and convert to 58mm threads of filters, hoods, flashes and lens converters, etc. This 55mm-58mm Step Up Filter Ring is really a very useful and helpful gear for you to save money to buy extra filter lenses. Package Contains: 1 x 55mm-58mm Step Up Ring