Kenko Step-Up Ring N 52-67 Made in Japan I haven't used it since I bought it, so I don't know about its functionality. It's an unopened, unused item. For those looking for one. I will protect it with cushioning material and ship it via Yu-Packet Post Mini. I cannot accommodate holds, discounts, or exclusive offers. ・No pets ・No smokers [Product Details] This is a conversion ring that allows you to attach filters or conversion lenses of different sizes to the front of your lens. It's a ring made of precision-machined aluminum with precise threads, allowing for secure and comfortable attachment to the lens and filters. The outer surface has knurling (anti-slip) for easy turning and excellent operability.