Review on 77mm to 82mm Step-Up Lens Adapter Ring for Filters by Breakthrough Photography: Premium CNC Machined Brass with Matte Black Electroplated Finish by Eric Smithlin

Probably the best adapter rings you can buy. They feel very durable, easy to apply and I've had no issues with the filters sticking. I also love that you can buy a ring that skips multiple sizes without having to string together a lot of cheap sensor rings to get the right size. There is no doubt about the qualitative difference between these proposals. I have two different sizes 67-77 and 72-77 and both are great. I find it difficult to justify the price difference. I've had cheaper rings and they tended to stick to the filters or together and of course felt a lot cheaper but you can get the whole set for a fraction of the price of one of these rings. If you only need 1-3 sizes, they are worth it.