حلقة ترقية بروماستر - 40.5 مم-55 مم

The machining on this ring is so precise that my 55mm filter threads on without any wobble. It feels solid and doesn't cross-thread even when I'm not paying close attention. Perfectly solves my lens filter size problem.

Wasn't sure if a step-up ring would hold a heavy 55mm filter securely, but this one is rock solid—no wobble or cross-threading at all. The machined finish feels really premium in hand, too.

Finally, a step-up ring that actually threads on smoothly without getting stuck. The precision machining is obvious the moment you screw it on. It converted my old 40.5mm lens to a 55mm filter size perfectly.