Promaster Step Up Ring - 37mm-49mm

Finally got this to work with my 49mm lens and 37mm filter. The machining is precise — no wobble or cross-threading, screws on smoothly every time.

The threading on this step-up ring is so smooth it screws on without any wobble. I used it to mount a 49mm filter onto my 37mm lens and the fit was perfect.

Finally, a step-up ring that actually threads on without that annoying gritty catch halfway around. The precision machining is obvious the second you screw it on—37mm to 49mm went on my lens dead straight, no wiggle, no cross-threading. Took me two minutes to swap my filters and it's been solid ever