Thank you for viewing! This is a step-up ring from "NiSi (Nishi)," a brand known for its square filters and high-quality filters. I am selling it to organize my equipment. 【Product Details】 ・Brand: NiSi (Nishi) ・Product Name: Step-up Ring Professional (Brass) ・Size: Lens side 72mm → Filter side 77mm ・Material: Brass 【Why it's recommended】 This is a current product sold on EC sites such as Amazon. Unlike general aluminum rings, it is made of highly rigid "brass." It is very unlikely to have the "distortion and getting stuck on the lens" trouble that is common with inexpensive rings, allowing for smooth attachment and detachment. The surface has an anti-reflective matte black coating, and the texture has a very high-class feel. 【About the condition】 After purchasing new, I opened it, but I rarely had the opportunity to use it, and it is a "like new" item that has been stored in a dehumidified storage. ・There are no distortions, stripped screw threads, or scratches. ・No paint peeling is visible. (Please check the condition in the photos) 【About Shipping】 I will carefully pack it with bubble wrap and send it via anonymous shipping. I have set the price considerably lower than buying a new one, so if you are looking for a high-quality ring, please consider it. Immediate purchase is OK! #NiSi #StepUpRing #FilterDiameterConversion #LensFilter #BrassMade #CameraAccessories