Promaster Step Up Ring - 40.5mm-55mm

Name: Promaster Step Up Ring - 40.5mm-55mm
Brand: Promaster
SKU: 5232
Price: 6.77 USD
Availability: InStock
Rating: 4.4 (5 reviews)

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

Promaster Step Up Ring - 40.5mm-55mm - View 2

$6.77 ~~$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 (4.4 / 5 · 5 reviews)

Sophia ★★★★★ Oct 21, 2026

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.

Nicholas ★★★★★ Oct 20, 2026

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.

Amelia Q. ★★★★★ Oct 18, 2026

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.