This Step UP Ring Adapter easily screws onto the front of any Lens with 58mm Filter Diameter, and converts the thread size of your lens to the thread size of any other 77mm accessory The Male Side: 58mm The Female Side: 77mm Made of high quality anodized aluminum and polished with strict surface treatment to avoid wobbling or cross-threading, combined with a slim design makes this ring durable and functional. Suitable for a wider variaty of Filters, Adapters, Hoods and more.