Promaster 升級環 - 40.5mm-55mm

Finally got this to adapt my old 40.5mm lens to my 55mm filters, and the threads catch cleanly every time without any wobble. The machining is solid enough that I don’t worry about cross-threading even when I’m in a hurry.

The threading is buttery smooth and seats perfectly on my lens, no wobble or cross-threading at all. I’ve used it to mount a bigger filter for a few shoots and it holds tight every time. Just a solid, precise piece of metal that does exactly what it should.

I was worried the threading might feel rough, but it screwed on smoothly to my lens and didn't cross-thread at all. The finish looks clean and the adapter ring feels solid.