Promaster Step Up Ring - 37mm-52mm

I was tired of cheap rings that wobble, but this one is machined precisely so my larger filters sit perfectly flush on the 37mm lens. The threading is smooth and it doesn’t get stuck.

Finally, a step-up ring that threads on smoothly without any wobble or cross-threading. The precision machining is obvious when you screw it onto your lens, and it holds the 52mm filter securely. Made my vintage lens setup much more practical for modern filters.

Fits my 37mm lens perfectly and steps up to 52mm without any wobble or play. The machining is clean and precise, so the adapter feels solid when I screw on my filters.