Uni-ball Signo Gel Ink Rollerball Pen UM-120

Uni-ball Signo Gel Ink Rollerball Pen UM-120

Key UM-120 Features

• Model: UM-120 (sometimes listed as Uni-Ball Signo Fine)

• Ink Type: Pigment-based Gel Ink (Uni Super Ink)

• Ink Quality: Waterproof, fade-resistant, and acid-free (archival quality).

• Design: Capped pen with an ergonomically designed rubberized grip and a metal clip.

• Standard Size: Most common size is 0.7mm (which produces a line of about $0.4\text{mm}$).