uni Style Fit: Build-Your-Own Multi Pen and Refills
uni Style Fit is Mitsubishi Pencil's build-your-own multi pen: you pick a 3-, 4- or 5-color holder and fill it with refills. Gel refills use uni-ball Signo ink in 0.28, 0.38 and 0.5 mm and 16 colors; Jetstream ballpoint and 0.5 mm pencil refills also fit. The 3-color holder is 146.2 mm long and 7.7 g.
On this page
Product facts
- Product
- uni Style Fit 3-color holder (UE3H-208) with Style Fit gel refills (UMR-109)
- Brand
- uni
- Brand origin
- Japan
- Made in
- Not stated*
- Released
- 2009*
- Price range
- $$$5–20 per pen (multi-packs divided by the count)
Notes on these facts
- Made by Mitsubishi Pencil Co., Ltd.. Country of manufacture not stated: Mitsubishi Pencil's Japanese Style Fit pages, its January 2026 press release and the Monotaro listings we read don't state a country of manufacture. Check the packaging. Price: example listing. Released: Mitsubishi Pencil's January 15, 2026 press release says the Style Fit series has been sold since 2009; we found no exact launch date.
- Price bands are typical US retail, checked October 2026. Conversions to US dollars are approximate, at October 2026 rates (US$1 = ¥158 = ₩1,330 = NT$32.5 = CN¥6.7 = SEK 9.9 = DKK 6.7 = ₺49.6 = C$1.41 = A$1.43 = CZK 21.7; €1 = US$1.12; £1 = US$1.32; CHF 1 = US$1.21).
Key takeaways
- Mitsubishi Pencil launched Style Fit in 2009 and renewed the line on January 27, 2026 with matte holders and a 0.38 mm Jetstream refill.
- Gel refills (UMR-109) use uni-ball Signo pigment ink in 0.28, 0.38 and 0.5 mm, in 16 colors, at ¥110 (about US$0.70) each in Japan.
- Monotaro lists the 3-color holder at 146.2 mm (5.8 in) and 7.7 g, the 5-color holder at 146.2 mm and 10 g, and a gel refill at 98.6 mm.
- Japanese reference prices: 3-color holder from ¥220 (about US$1.40), 5-color from ¥275 (about US$1.70), Meister 4-color ¥880 (about US$5.60).
- Holders and refills are sold separately, so a filled 3-color pen costs more than its holder.
What is the uni Style Fit?
Style Fit is a multi pen you assemble yourself: an empty holder plus the refills you choose. Mitsubishi Pencil, which sells pens under the uni brand, launched the series in 2009. Its 2026 tagline is “選べるデザイン、選べるインク” (choose the design, choose the ink).
Mitsubishi Pencil says its research found that people of every age and gender value being able to customize a pen. In the US, Style Fit holders and refills are sold separately by importers such as JetPens, which has a dedicated Style Fit section.
uni Style Fit specs
| Part | Code | Length | Weight | Japan price |
|---|---|---|---|---|
| 3-color holder | UE3H-208 / UE3H-FS | 146.2 mm (5.8 in) | 7.7 g | ¥220 (about US$1.40); matte ¥275 (about US$1.70) |
| 5-color holder | UE5H-258 / UE5H-FS | 146.2 mm | 10 g | ¥275 (about US$1.70); matte ¥330 (about US$2.10) |
| Meister 4-color holder | UE4H-FMB | Not published | Not published | ¥880 (about US$5.60) |
| Gel refill | UMR-109-28 / -38 / -05 | 98.6 mm | 0.8 g | ¥110 (about US$0.70) |
| Jetstream refill 0.38 mm | SXR-89-38 | Not published | Not published | ¥88 (about US$0.60) |
Codes and prices come from Mitsubishi Pencil’s Japanese pages and its January 15, 2026 press release; lengths and weights from Monotaro. The black 0.28 mm gel refill’s JAN is 4902778092941.
Which refills fit the Style Fit?
Three kinds: uni-ball Signo gel, Jetstream ballpoint and a 0.5 mm mechanical pencil. Mitsubishi Pencil lists the gel refills in 0.28, 0.38 and 0.5 mm and 16 colors, with water-based pigment Signo ink. Monotaro lists Jetstream refills in 0.5, 0.7 and 1.0 mm, and Mitsubishi Pencil added a 0.38 mm Jetstream on January 27, 2026.
- 0.28 mm gel: tiny planner writing; the finest Style Fit tip.
- 0.38 or 0.5 mm gel: everyday notes and color-coding.
- Jetstream: oil-based ballpoint ink for forms and fast notes; see the Jetstream RT.
- 0.5 mm pencil: a sketch or margin-note slot.
How do you load a Style Fit holder?
Twist off the holder’s front, push the refills into the back, and screw the front back on. Mitsubishi Pencil’s four steps are:
- Twist the refill’s cap to break the label and pull the refill out.
- Twist the holder’s front section to remove it.
- Push the refill firmly into a hole inside the back section.
- Screw the front section back on.
What changed in the 2026 Style Fit renewal?
On January 27, 2026, Mitsubishi Pencil added matte holders, a slim Meister 4-color holder and the 0.38 mm Jetstream refill. It said earlier holders were mostly metallic or glossy, while buyers now want finishes that match their other things.
The new matte 3-color holders come in clear, lime yellow and lilac; the 5-color in nail pink, scarlet and saxe blue. Body, clip and knock share one color. The Meister 4-color has a short metal clip and comes in five colors.
How does the Style Fit compare with other uni multi pens?
Style Fit is the one you configure; the Jetstream 4&1 comes ready-made with four ballpoint colors and a pencil.
| Pen | Inks | Configurable | Notes |
|---|---|---|---|
| uni Style Fit | Signo gel, Jetstream, pencil | Yes, every slot | Holder and refills sold separately |
| uni Jetstream 4&1 | Jetstream black, red, blue, green + 0.5 mm pencil | No | 148.8 mm, 13.7 mm wide |
| Zebra bLen 3C | Emulsion ballpoint | No | See our bLen guide |
Pick the Style Fit if you want gel ink in a multi pen or an unusual mix of colors.
Where is the uni Style Fit made?
Mitsubishi Pencil doesn’t say on the Japanese pages we read, and the retailer listings don’t either. The company is based in Shinagawa, Tokyo. Check the packaging.
Frequently asked questions
What is the uni Style Fit?
A customizable multi pen from Mitsubishi Pencil: you buy an empty holder with 3, 4 or 5 slots and choose the refills, so every slot can be a different color, tip size or ink type.
What refills fit the uni Style Fit?
Style Fit gel refills (UMR-109, uni-ball Signo ink, 0.28/0.38/0.5 mm), Style Fit Jetstream ballpoint refills (0.38 to 1.0 mm) and a 0.5 mm mechanical pencil refill (M5R-189), per Mitsubishi Pencil and Monotaro.
What sizes do Style Fit gel refills come in?
0.28, 0.38 and 0.5 mm, in 16 ink colors, according to Mitsubishi Pencil Japan.
How do you put a refill in a Style Fit?
Mitsubishi Pencil says: twist the refill's cap to break the label and pull the refill out, unscrew the holder's front, push the refill firmly into a hole in the back section, then screw the front back on.
How big is the uni Style Fit?
Monotaro lists the 3-color holder at 146.2 mm (5.8 in) and 7.7 g, and the 5-color holder at the same length and 10 g. We found no published diameter.
Is the Style Fit expensive?
Each part is cheap, but they add up. In Japan the 3-color holder lists at ¥220 (about US$1.40) and each gel refill at ¥110 (about US$0.70); in the US a filled 3-color pen lands in our $$ band ($5–20).
Where is the uni Style Fit made?
Mitsubishi Pencil, based in Tokyo, doesn't say on the pages we read, and neither do the retailer listings. Check the packaging.
Sources
- Mitsubishi Pencil (Japan): スタイルフィット ホルダー (holder overview: 3/4/5-color holders, 16 gel colors, 0.28/0.38/0.5 mm, refill steps)
- Mitsubishi Pencil (Japan): スタイルフィット 3色ホルダー (UE3H-208 and UE3H-FS, reference prices, JAN)
- Mitsubishi Pencil (Japan): スタイルフィット 5色ホルダー (UE5H-258, UE5H-FS, reference prices)
- Mitsubishi Pencil (Japan): スタイルフィット ゲルインクボールペン リフィル (UMR-109-28/38/05, ¥110, JAN)
- Mitsubishi Pencil (Japan): スタイルフィット brand page
- Mitsubishi Pencil press release (via Digital PR Platform): 「スタイルフィット」…リニューアル (January 15, 2026; series since 2009; on sale January 27, 2026)
- Impress Watch: 三菱鉛筆、カスタマイズペン「スタイルフィット」にジェットストリーム0.38mm (January 19, 2026)
- Monotaro: Style Fit search results (holder and refill lengths and weights)
- JetPens: Uni Style Fit Series
- JetPens: Uni Style Fit 3 Color Multi Pen Body Component, Silver
- The Well-Appointed Desk: Review: Uni Style Fit (February 2012)