ProMaster ステップアップリング（37mm→58mm）

Threaded perfectly onto both my lens and the filter I wanted to use, with no annoying cross-threading. The aluminum feels solid enough that I’m not worried about it deforming when I tighten it down. A simple, well-made adapter that does exactly what it should.

I was worried about wobble with a step-up ring this size, but the precision machining here is obvious the moment you thread it on. It sits flush against the lens and accepts my 58mm filters without any play, so the whole setup feels solid.

The threading is spot-on and screws on smoothly without any wobble, so my 58mm filters fit my 37mm lens perfectly. It's solidly built for the price, and I don't have to worry about it stripping after a few uses.