Tombow

From pencil stamps to brush pens

Tombow ("dragonfly" in Japanese) was founded in 1913 by Harunosuke Ogawa, a pencil maker in Tokyo's Asakusa district. The first century of the company was mostly about pencils — Tombow's wooden pencils were standard issue in Japanese schools for decades, and the Mono brand (founded 1967) remains the bestselling pencil in Japan. The Mono eraser, introduced 1969, is so ubiquitous that "Mono" is the generic word for "eraser" among Japanese schoolchildren.

The shift toward what international audiences know Tombow for — the brush pens — happened gradually from the 1980s onward, as Tombow's chemists adapted Japanese sumi calligraphy tradition to disposable felt-tip and brush-tip cartridge pens. The 1990s ABT line (later renamed Dual Brush Pens) became the standard tool of modern hand-lettering and bullet-journal communities. The 2000s Fudenosuke line took the same approach with denser brush nibs designed for Japanese calligraphy practice.

The product lines worth knowing

Fudenosuke brush pens (筆之助)

Black-ink brush pens in two firmnesses — Soft Tip (黒軟筆) for variable line weight and Hard Tip (黒硬筆) for cleaner control. Used for greeting cards, calligraphy practice, hand-lettering, and bookplate signing. The Twin Tip version has both a soft and hard tip on the same pen, plus a fine bullet tip for outlines. $8–12 per pen. Sold individually and in 2-pack and 6-pack assortments.

Dual Brush Pens (ABT)

Water-based brush pens with a flexible brush tip on one end and a fine bullet point on the other. Available in 108 colors plus a colorless blender. The colors are designed to be blendable — wet one color onto another with the blender pen and you get smooth gradients. The 96-color set is the standard purchase for serious hand-letterers. We stock smaller curated sets (10-color, 20-color, themed palette sets) that are gift-friendly and US-DDP-eligible without exceeding the COG limit.

Mono erasers

The black-blue-white striped block eraser — instantly recognizable to anyone who's ever shopped at a Japanese stationery store. Mono produces less dust than European competitors and erases pencil cleanly without smudging or paper damage. Mono Smart (slim profile) and Mono Knock (mechanical pencil-style refillable eraser) are popular alternative formats. We stock the full range.

Mono Graph mechanical pencils

Tombow's flagship mechanical pencil line, recognizable by the same Mono color scheme as the erasers. Shake-to-advance lead mechanism, integrated eraser at the top. Sold in 0.3, 0.5, and 0.7mm lead sizes.

Why Tombow stands out

Three things distinguish Tombow within the crowded Japanese stationery space:

• Material engineering depth. Tombow runs an in-house R&D facility that develops its own ink chemistry, pen barrel resins, and brush-tip fibers. The Fudenosuke brush is a proprietary monofilament fiber assembly that Tombow spent over a decade refining — the closest competitor (Pentel Pocket Brush) uses a different (also excellent, but different) approach.
• Color science. The Dual Brush Pen color set was developed in collaboration with Color Marketing Group consultants and is updated every few years based on color trends in graphic design and product design. This is why the Tombow palette feels "current" while feeling timeless — the underlying color spec is reviewed continuously.
• Affordability without compromise. A single Fudenosuke pen retails for under $10. A Mono eraser is under $3. Tombow keeps prices in reach of Japanese students while maintaining manufacturing standards that justify a much higher price internationally.