Uni-ball Signo RT1 Retractable Gel Ink Pen, Medium Point 0.5mm, Rubber Grip, UMN-155-05, 10 Color Value Set
- The diameter of a lead : Fine Point 0.5mm, 10 Color Set.
- black, red, blue, baby pink, orange, lime green, green, light blue, blue black, violet.
- Uni-ball Signo RT1 Retractable Gel Ink Pen, UMN-155-05.