About this item 43mm 67mm Filter Ring, 43 to 67mm Step UP Ring, it can bed easily screwed onto the front of any Lens with 43mm Filter Diameter, and converts the thread size of your lens to the thread size of any other 67mm accessory The Male Side: 43mm The Female Side: 67mm 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. Step Up Ring 43 to 67mm, suitable for a wider variaty of 67 mm Filters, Adapters, Hoods and more.