Sanby x ob1toy Uniball One P Gel Pen 0.38/0.5mm

Sanby x ob1toy Uniball One P Gel Pen 0.38/0.5mm

Ob1toy × SANBY uni-ball one P Collaboration Pen showcases illustrated designs by illustrator/designer ob1toy combined with the uni-ball one P pen by Uni Mitsubishi Pencil. Each model features a retro-inspired look, packaged to match its artwork, and includes a removable main-motif charm.

The line offers selectable ball diameters—0.5 mm or 0.38 mm—depending on the design, and refills (sold separately) allow you to switch to your preferred tip size. Ideal for everyday writing with smooth black ink and a compact, easy-to-carry form.

Key Features
Illustrated collaboration: Designs by ob1toy produced in partnership with SANBY
uni-ball one P body: Uses the uni Mitsubishi Pencil mechanical and ink system
Retro-themed styling: Distinct artwork-inspired packaging for each design
Removable charm: Each pen includes a detachable motif charm
Selectable tip sizes: 0.5 mm or 0.38 mm depending on the design; refillable with alternate sizes
Design Variants    Retro Mail: 0.5 mm / Bunnies: 0.38 mm / SHIPS CAT: 0.38 mm / Travel Bear: 0.38 mm

Dimensions    13.9 × 19.2 × 116.8 mm
Ink    Black
Materials    ABS resin, Brass, Plating, SUS
Production    Japan
Packaging    Individual package
Pen Body    uni-ball one P (Uni Mitsubishi Pencil)