BIC® 1.0 MM 4-Color Medium Retractable Ballpoint Pen Is Refillable For Continued Use. Multicolor Writing And Drawing Is Easier Than Ever With These 4-Color Pens. Featuring Assorted Colors, Each Of These BIC Pens Lets You Switch Between An Array Of Colors, Allowing You To Create Vibrant Artwork Or Whip Up Color-Coded Notes For Simple Studying.