CDT Frixtion Ball 3 is the multi-color (Black/Red/Blue ink) pen which is the world’s first retractable, erasable gel ink pen manufactured by Pilot. You can be easily erased and rewritten as many times as you like with this innovative pen without any wear or tear to the paper or messy eraser crumbs. The heat generated by erasing friction causes our unique thermo-sensitive gel ink to become clear so the words disappear completely from the page. Once you use this ball pen, there is no need to be perfect the first time.