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MTNU keycaps are GMK’s medium-height, spherical keycaps, developed with designer Matteo Spinelli, known as Matt3o. GMK specifies double-shot PBT construction; the White on Black set uses an MX-cross mount and opaque legends. To choose a kit, match its current diagram to your keyboard’s rows, key widths, and spacebars. Sources: GMK’s MTNU overview, Matt3o’s May 2023 update, and GMK’s WoB specifications.
This guide is for keyboard owners deciding which MTNU kit to investigate before ordering. It uses WoB as a documented example, with a worksheet for checking your particular board. Recommendations draw on published specifications captured October 15, 2026, and dated designer accounts; no hands-on testing is claimed.
Quick takeaways
- Separate the profile, colorway, and selected kit when identifying a product.
- Use the named kit’s contents and diagram to check fit; a total key count cannot establish every required size and row.
- Confirm the selected package and delivery destination before evaluating an order.
On this page: Product identity · Profile and construction · WoB kits · Fit worksheet · US ordering · Inspection and care · FAQ
What identifies GMK MTNU keycaps?
Read an MTNU listing as three separate choices: the profile name, the colorway, and the package of keys. For the example here, MTNU identifies the profile, WoB means White on Black, and Grand Base or 70% Base identifies a particular kit. GMK’s WoB product page presents several kit choices under the same product heading, so the heading alone does not tell you which package you have selected. For comparisons with other GMK series, use the GMK series and kit guide.
Authorship also has two levels. Matt3o’s September 2022 design account identifies him as the profile designer working with GMK, while the WoB product features credit GMK Lab as that set’s designer. Those credits describe different contributions: developing the profile and designing the named set.
When saving a candidate product, record its complete identity in plain language—for example, “GMK MTNU WoB, Grand Base Set.” Keep any country kit as a separate line. This makes it easier to compare the product diagram with the package listed in your cart without treating every MTNU listing as equivalent.
Profile, material, and legends
GMK’s dedicated MTNU overview describes a medium-height profile with spherical shapes and curved edges, made from 100% PBT using double-shot construction. The WoB feature list specifies the row sequence 1-1-2-3-4-4, MX-switch compatibility, and no backlight transmission.
These details answer different buying questions. The profile describes the key shapes; the row sequence helps you identify the required sculpted rows; the mounting specification addresses the switch interface. For WoB, the backlight specification means you should choose it with opaque legends in mind if illuminated lettering matters to you.
There is a wording conflict on the WoB page: its general description calls the shape cylindrical. The dedicated MTNU page explicitly describes spherical shapes, consistent with Matt3o’s May 20, 2023 pre-release account, which calls the profile sculpted and spherical. The explicit profile descriptions provide the basis for identifying MTNU here.
Keep development history separate from included keys
Matt3o’s May 2023 account describes deep-dish homing keys and a staged tooling plan that included expanded 40% support, a 6u spacebar, and a later flat R5. His September 16, 2022 notes also discuss possible future R0 and R5 additions. These dated accounts explain the design’s development; they do not establish the contents of a kit offered today.
Use a current kit diagram to answer whether a particular row or spacebar is included. Likewise, the documented shape and material do not establish an ergonomic benefit or a particular sound on your board. Choose on the supported specifications, then seek relevant hands-on evidence if feel or sound is your deciding factor. For a shape shortlist, use the keycap profile comparison separately from the current-kit inventory.
WoB kit counts and layout coverage
The following table compares the packages named in GMK’s WoB product text and selectors. It records documented contents and selection checks, without implying current stock.
| Named WoB kit | Documented count | What to check before choosing it |
|---|---|---|
| Grand Base Set | 157 keycaps | Compare its broad layout coverage with every key your board requires. |
| TKL Base Set | Count not specified in the captured text | Obtain its own diagram; keep it distinct from Grand Base. |
| 70% Base Set | 90 keycaps | Match the smaller package against your full key inventory. |
| DE-Kit | 30 keycaps | Check the regional legends and required base-kit combination. |
| FinSwe-Kit | 29 keycaps | Match the country-kit diagram to your intended layout. |
| NorDen-Kit | 34 keycaps | Confirm the exact regional keys you need. |
| UK-Kit | 13 keycaps | Verify the required shapes, rows, and legends in the diagram. |
GMK describes Grand Base as covering layouts from 60% through full-size, including 65%, 75%, 7u 1800, Alice, and basic 40% coverage. That makes it a useful starting point when investigating those layout families. It still leaves the exact-board comparison to you: “basic 40%” does not identify every compact arrangement, and a family name does not enumerate every key’s width, row, or mounting requirements.
For a TKL board, investigate the named TKL kit directly. For a compact board, compare the 70% kit and Grand Base diagrams against the same inventory before deciding whether the smaller package is sufficient. Choose the package that supplies your required keys rather than using the larger count as the sole reason to buy.
Country kits need the same attention. GMK directs buyers to the pictures for country-layout details, while the product’s selectors and property list use somewhat different kit labels. Confirm the exact named package and its diagram instead of assuming similarly worded options contain identical keys. All counts and coverage statements above come from the WoB listing.
An exact-board fit worksheet
Before comparing kits, gather your keyboard’s exact model and layout documentation, the selected MTNU kit diagram, and any information supplied with your switches and stabilizers. Use the worksheet below as an inventory task. Its purpose is to identify unanswered fit questions before you place an order.
| Check | Record from your keyboard | Compare with the selected kit |
|---|---|---|
| Switch interface | Exact switch model and keycap mount | Confirm that the required mount matches the documented MX-cross interface. |
| Main keys | Required keys, widths, and positions | Locate a suitable cap for each position in the diagram. |
| Sculpted rows | Required row for each position | Match row labels as well as key width and legend. |
| Modifiers and Enter | Required shapes, widths, and quantities | Check every required variant individually. |
| Spacebars and stabilized keys | Widths, quantities, and mounting requirements | Request confirmation where the diagram does not show enough detail. |
| Regional layout | Required legends and key shapes | Check the base kit together with the exact country kit. |
| Clearance | Any constraints documented for your board and switches | Resolve unanswered fit questions with the relevant manufacturer or seller. |
GMK documents the MX-cross interface and broad layout coverage, but the supplied product text does not provide a complete current row-by-row width, stabilizer, or clearance inventory. The worksheet therefore supports a conditional buying decision rather than certifying a particular keyboard. See the MTNU overview and WoB specifications for the documented starting points.
For example, suppose your compact board requires a particular short right Shift and split spacebars. Find each required cap in the selected kit diagram, including its row and quantity. If either remains unclear, send the keyboard layout and marked kit diagram to the seller for confirmation. A package can contain more keys than your keyboard uses while still leaving a required variant unresolved. Use the split-spacebar keycap coverage to record the exact spacebar arrangement.
Decision rule: proceed when you can account for every required key and have resolved mounting and clearance questions. Treat any unmatched position as an open question, even when the listing names your keyboard’s general layout family.
US ordering checks
GMK’s FAQ lists the USA among served destinations and says prices and availability update with the selected delivery country. Set that destination before assessing the order, then check that the selector, kit diagram, cart, and order summary identify the same package. Confirm any country kit separately.
For shipments outside the European Union, GMK says additional taxes, import or clearance fees, and customs duties may be the customer’s responsibility. Its FAQ also warns that delivery estimates can vary by region and customs processing. Check the applicable charges and timing for your order rather than treating a product-page estimate as a delivered-cost or arrival guarantee.
If combining items with different delivery dates, check the shipping arrangement carefully. GMK says combined items ship together according to the longest indicated delivery date. Review the applicable return terms as well, including eligibility, return shipping costs, and whether installation affects acceptance; the FAQ’s damage-reporting instructions do not establish those terms.
Finally, GMK states that the WoB product pictures are renders, final colors may differ slightly, and pictured keyboards are excluded from the purchase. Use the illustrations to examine the set while keeping those limits in mind. Sources: GMK FAQ and WoB product information.
Inspection and care
Keep the packaging until you have checked the contents and addressed any concerns. GMK’s damage-reporting procedure requests a photo of the defect and a photo of the packaging’s QR code or RFID tag. For external shipping damage, it also asks buyers to document the packaging and contents and contact support promptly.
For product damage, GMK says to report it immediately and no later than 14 days after receipt. Its specified keycap inspection conditions are:
- A viewing distance of 45–50 cm and a 90° viewing angle.
- Approximately 2 seconds of viewing under diffuse light of at least 1,000 lux.
- No direct sunlight, magnifying glasses, or mirrored-surface aids.
This is GMK’s stated damage-reporting workflow, not a general 14-day US return promise. Preserve the requested evidence and consult the terms applicable to your order for return or replacement eligibility.
For cleaning, GMK recommends mild detergent or dish soap with a soft, slightly damp cloth. The same FAQ warns that UV exposure can change plastic colors, with white especially sensitive. Follow that care guidance and consider sunlight exposure when choosing where to keep the keyboard.
Frequently asked questions
Do MTNU WoB legends let keyboard backlighting through?
No. GMK lists the WoB set as having no backlight transmission, alongside double-shot PBT construction and an MX-cross stem interface. If illuminated lettering is a purchase requirement, this documented WoB specification should guide your decision. Check the exact set’s specifications when considering another MTNU colorway. Source: GMK WoB.
Does Grand Base guarantee compatibility with every 40% keyboard?
GMK describes Grand Base as providing basic 40% coverage. Confirm your particular layout against the current kit diagram, including each modifier, sculpted row, and spacebar requirement. The broad coverage statement is a starting point for checking fit; it does not supply a complete inventory for every compact board. Source: GMK’s kit descriptions.
Is MTNU Susu the same product as MT3 Susuwatari?
Matt3o’s May 2023 update explicitly distinguishes MTNU Susu from MT3 Susuwatari and says the colors differ slightly. Keep the full profile and set name when identifying either product. Similar names do not establish identical colors, kit contents, or compatibility with the package you are considering. Source: Matt3o’s pre-release update.
Your next step
Identify MTNU keycaps by the complete profile, colorway, and kit name, then compare the selected package with your exact keyboard inventory. Use the WoB counts to narrow the options and the worksheet to resolve individual fit questions. Before ordering, obtain the current diagram for your chosen kit and account for every required key.
