Promaster Step Up Ring - 40.5mm-55mm

Name: Promaster Step Up Ring - 40.5mm-55mm
Brand: Promaster
SKU: 5232
Price: 5.97 USD
Availability: InStock
Rating: 4.6 (5 reviews)

Promaster Step Up Ring - 40.5mm-55mm - Main image

$5.97 ~~$9.95~~ In stock

Category: Stepping Rings

A perfect complement to the ProMaster filter line. ProMaster Stepping Rings are precision machined to properly convert the thread size of your filter and/or lens.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Sebastian ★★★★★ Oct 20, 2026

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.

Benjamin ★★★★★ Oct 19, 2026

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.

Evelyn ★★★★★ Oct 18, 2026

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.