Viacfarebné pero BIC 4 Colours 3+1HB | KanceláriaShop.sk
Kuličkové pero BIC Cristal - černé | OFFICEO.cz
Pero kuličkové BIC Atlantis, modré | OFFICEO.cz
Amazon.com : BIC 4 Color Ballpoint Pen, Medium Point (1.0mm), 4 Colors in 1 Set of Multicolor Pens, 3-Count Pack of Refillable Pens for Journaling and Organizing : Rollerball Pens : Office Products