Please only purchase if you have knowledge of the product. I do not have the knowledge to answer questions. Although it is new and unused, there may be scratches or marks from storage. The following text is generated by AI and should not be relied upon. Step-up ring set in various sizes, made by K&F CONCEPT. - Brand: K&F CONCEPT - Size: 49mm-52mm - Size: 52mm-55mm - Size: 55mm-58mm - Size: 62mm-67mm - Size: 58mm-62mm - Size: 67mm-62mm - Size: 77mm-72mm - Size: 82mm-77mm Thank you for viewing.