Is the second installment of the Masro × Chosfox key switches in the works?

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This is a news article intended to summarize verified information about new products, product launches, specification updates, campaigns, and related developments. It is not a long-term hands-on review or product evaluation. Any product samples, advertising relationships, affiliate links, or other forms of monetization are disclosed within the article.

On September 6, 2026, Masro posted an update on X, revealing that they are currently prototyping a keyboard switch.

Following Ragna, here’s the second installment.
Currently in the prototype stage pic.twitter.com/cYN35UWKXL— Masro(PMD) (@plusm_2021) September 6, 2026

The Ragna Switch is a linear key switch developed by Chosfox and Masro.

  • Switch type: Linear
  • Top housing: PC (polycarbonate)
  • Trunk: POM (polyoxymethylene)
  • Lower housing: Nylon
  • Spring: Single stage, 22mm
  • Actuation force: 45 g
  • Bottom out force: 55 grams
  • Before the trip: 2.0 mm
  • Total travel distance: 3.7mm

Source: https://chosfox.com/ja/products/chosfox-x-masro-ragna-linear-switch

Ragna is a linear switch characterized by its crisp clicking sound.

Compared to the magnetic key switches that have become popular recently, these have a slightly deeper stroke length of 3.7 mm, giving them a feel that’s characteristic of mechanical keyboards.

Although nothing has been announced yet, I wonder if the theme color will be green.

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Image source: https://x.com/plusm_2021/status/2096582366710186007

In any case, I’m looking forward to seeing how it turns out.

Let’s wait for further information.

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  • Conflicts of Interest: Product Offering: None Monetization Link in this paper: Yes
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Avatar of 河村 亮介 Ryosuke Kawamura Greenkeys chief editor

Ryosuke Kawamura is the Editor-in-Chief of Greenkeys and the founder of GreenEchoes Studio.

He covers mechanical keyboards, custom keyboards, and input devices through reviews, interviews, hands-on testing, photography, and editorial work. He has reviewed more than 100 products and regularly reports on JIS-layout compatibility and trends in the Japanese keyboard market.

He also founded the Japan Layout Alliance (JLA), an industry collaboration initiative aimed at improving compatibility for Japanese-layout keyboards.

Greenkeys values editorial independence and transparency. Product samples, advertising relationships, and affiliate links are disclosed within each article.

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