Welcome to our store! 1. Made of high-quality aluminum alloy material, these adapter rings are solid, durable, wear-resistant and have a long lifespan. 2. These transformer-caliber adapter rings can be installed in front of the lens to allow lenses with different diameters to share the same filter diameter, UV protection, CPL filter, star filter, gray filter, close-up lens protection etc. 3. The ring's outer thread with small diameter is the lens end, while the inner thread with large diameter accommodates a variety of filters of the same caliber, such as UV, CPL, star filter, gray filter, close-up lens protection etc. 4. These adapter rings are lightweight, portable and easy to install. 5. They are small step-up conversion caliber adapter rings. Material: Aluminum alloy Color: Black Applicable model: General Packaging list: - 1 * 49mm-52mm Adapter ring - 1 * 52mm-55mm Adapter ring - 1 * 55mm-58mm Adapter ring - 1 * 58mm-62mm Adapter ring - 1 * 62mm-67mm Adapter ring - 1 * 67mm-72mm Adapter ring - 1 * 72mm-77mm Adapter ring - 1 * 77mm-82mm Adapter ring 100% Satisfaction: Our customers are our top priority. If you find any product issues after receiving the items, such as damage or incorrect quantity of goods, please contact the seller immediately. We strive to provide you with satisfactory customer service.