Mitsubishi Pencil Gel Ink Ball Pen Replacement/Refill UMR-83E Unboarding Signo 307 Red UMR-83E.15 Mitsubishi Pencil 4902778217115

Ball diameter: 0.38 mm. Refill for Uni-ball Signo 307, a gel ink ballpoint pen with a smooth writing feel thanks to its cellulose nanofiber blend. UMR-83E. ◆Ink color: Red ◆Gel ink ◆Body: UMN-307-038