Uni-ball One F Gel Pen - 0.5mm Black Ink

Experience smooth and stable writing with the Uni-ball One F Fade Colour Gel Pen series. Designed with Uni’s signature low centre-of-gravity stabilizer mechanism, the One F provides a balanced and comfortable writing experience ideal for study notes, journaling, planners, and everyday writing. The specially formulated pigment gel ink produces darker and sharper black lines while helping reduce feathering and bleed-through. Finished in stylish fade-tone barrel colours inspired by natural scenery and minimalist Japanese aesthetics, this premium gel pen combines elegant design with exceptional writing performance.

Key Features

Official Uni-ball One F Fade Colour series design.

0.5mm fine tip suitable for smooth and precise everyday writing.

Features Uni’s stabilizer mechanism for a stable low centre-of-gravity writing experience.

Advanced pigment gel ink produces darker and sharper black writing.

Fast-drying ink helps reduce smudging and feathering.

Minimalist fade-tone barrel colours inspired by natural everyday scenery.

Metal nose cone helps reduce tip vibration during writing.

Wide-opening wire clip easily attaches to notebooks, planners, and folders.

Premium Japanese stationery designed for study, journaling, and office use.

Product Details

Brand: Uni Mitsubishi Pencil

Series: Uni-ball One F Fade Colour

Product Type: Gel Pen

Tip Size: 0.5mm

Ink Colour: Black

Ink Type: Water-Based Pigment Gel Ink

Mechanism: Retractable

Refill Compatible: UMR-05S

Material: ABS Resin, Brass, Stainless Steel

Body Dimensions: Approx. Φ11.1 × W15.5 × H139.2mm

Weight: Approx. 14.3g

Origin: Japan

Packaging: Individual Pack

Features: Low centre-of-gravity stabilizer structure with vivid pigment ink technology

Variant Details

Fade Red
Muted dusty red barrel inspired by soft fade-tone Japanese colour palettes and calm everyday aesthetics.

Fade Blue
Smoky faded blue barrel featuring a minimalist and modern stationery style inspired by natural scenery.

Fade Green
Soft sage green fade-tone barrel inspired by nature-inspired Japanese minimalist colour palettes.

Perfect For

School and study notes

Journaling and planners

Office and desk stationery

Minimalist stationery collections

Long writing sessions

Japanese stationery lovers

Fine detailed writing

Gift giving

Important Information

Refills sold separately unless otherwise stated.

Actual product colours may vary slightly due to monitor settings and production batches.

Imported Japanese stationery product.

Safety Information

Not suitable for children under 3 years old.

Contains small parts which may present a choking hazard.

Store away from direct sunlight and high temperatures.