Uni-ball - Signo 307 - Gel Pen Refill - 0.5 mm - Blue

Uni-ball Signo 307 Refill 0.38mm - Blue

Clear and composed, the Uni-ball Signo 307 refill in 0.38mm (Blue) delivers ultra-fine lines with a calm, refined tone. Its advanced gel ink flows smoothly across the page, offering rich color with quick-drying performance to keep your writing clean and smudge-resistant. Perfect for notes, planners, and detailed writing, it provides consistent precision with every stroke. Balanced and reliable, it brings a quiet clarity to your everyday writing.

Product Highlights

• Ultra-fine 0.38mm tip for precise, detailed writing

• Smooth gel ink flow with clean, consistent color

• Quick-drying formula reduces smudging and transfer

• Ideal for notes, planners, and fine everyday writing

Product Details

• Type: Gel Pen Refill

• Tip Size: 0.38 mm

• Ink Type: Water-based Gel Ink

• Ink Color: Blue

• Model: UMR-83E

• Brand: Mitsubishi Pencil (Uni)

• Made in Japan

A Little Note

Soft yet defined, this blue ink carries a sense of calm focus. Each line flows gently, clean, precise, and quietly expressive.