Promaster 4907 37-46mm 升級轉接環

Finally, a step-up ring that threads smoothly without that horrible gritty feeling. Fits my 37mm filters perfectly onto my 46mm lenses without any light leaks or wobble.

I've been using this step-up ring to mount my 52mm filters on a 67mm lens, and it fits snugly with no wobble or light leaks. The threading is clean and consistent, making attachment quick even when I'm swapping setups in the field.

The threading is machined perfectly smooth—no catching or wobble when I screw it onto my lens. It’s a solid little adapter that does exactly what it should for attaching filters.