Sakura Gelly Roll pens glide smoother than a ballpoint pen and doesn't bleed or blot through thin paper like ordinary ink pens or liquid rollerball pens. Dries permanent, water and fade proof. Extremely smooth writing, consistent ink flow to the very last drop. Gelly Roll Metallic Pen Set colors include Gold, Silver, Copper, Blue, Purple, Pink, Green, Teal, Red and Yellow. 1.0 mm ball with a 0.4 mm line. 10 pc.