SAKURA-Gelly Roll Gel Pen Set. Size: 0.3mm roller ball-fine line. Ice cream smooth gel ink will look great on any writing, journaling, drawing, or doodling projects. This ink won't bleed through thin paper, is waterproof and archival. This package contanins five pens: Red, Royal Blue, Purple, Pink, Black. Conforms to ASTM D 4236. Imported.