Uni-Ball One F — Indigo Duo

Uni-ball One F is the elegant, elongated sister to the chunkier Uni-ball One P. You get the same award-winning ultra-black ink, in a more refined format.

The limited edition Modern Pop pens come in retro colorways and have lovely, contrasting pen clips.

Prefer a different thickness? The nib sizes of this pen are interchangeable — you can swap a 0.38 refill into a 0.5 pen, and vice versa!