Promaster 升級環 - 40.5mm-43mm

I needed to attach a 43mm filter to my 40.5mm lens, and this ring fit snugly without any wobble. The black anodized finish matches the rest of my gear perfectly.

The threading is so precise that it screws on smoothly without any cross-threading or wobble, which was a concern I had with cheaper step-up rings. It's a simple piece, but the machining quality makes all the difference for a secure fit.

Finally got my 40.5mm filters to fit my 43mm lens without any wobble—the precision machining is spot on, and the ring threads on tight but still comes off easily when I need to swap.