Pilot Frixion Ball Erasable Extra Fine Point Gel Ink Pen - 0.5 Mm - 8 Color set /Value set Which Attached the Eraser Only for Friction Combines the convenience of a retractable with the incredible FriXion erasable gel ink Erase and rewrite repeatedly without damaging documents Unique Thermo-Sensitive gel ink formula disappears with erasing friction The eraser only for friction was attached the sake [ when you would like to erase broadly ]. Colors/Black/Violet/Blue/Light Blue/Green/Orange/Red/Pink