| 摘要 |
The present invention relates to a pen capable of using both ends for more than two pens or colors at the same time and, more specifically, to an interchangeable pen capable of using both sides by rotatably inserting pens through a pen insertion hole positioned at both ends of the body of the pen as well as providing two writing tools at the same time by easily assembling various writing tools such as colored pens, highlighters or pencils to the two ends, wherein the pen insertion hole inside of the body of the pens is made as screw-type. |
