Promaster Step Up Ring - 40.5mm-43mm

Name: Promaster Step Up Ring - 40.5mm-43mm
Brand: Promaster
SKU: 5211
Price: 7.06 USD
Availability: InStock
Rating: 4.4 (5 reviews)

Promaster Step Up Ring - 40.5mm-43mm - Main image

Promaster Step Up Ring - 40.5mm-43mm - View 2

$7.06 ~~$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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Preparing your order

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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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Delivery arrangements

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Before arranging a return

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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)

Claire Y. ★★★★★ Oct 22, 2026

The threading is buttery smooth on both sides, so attaching it to my lens and filter felt secure without any cross-threading worry. Fit my 40.5mm lens perfectly to take my 43mm filters, saving me from buying new ones.

Kevin ★★★★★ Oct 20, 2026

Two of my lenses use 40.5mm threads and this ring lets me share my 43mm filters between them. The threads are precision machined and screw on smoothly without any wobble or cross-threading. Exactly what I needed for a simple fix.

Samuel T. ★★★★★ Oct 19, 2026

The 40.5mm to 43mm conversion feels precise, no wobble or cross-threading when I attached it to my lens. It's lighter than I expected, which is nice for keeping the kit balanced. Happy with the solid metal build, no plastic feel whatsoever.