People usually need needed a variety of pen pen in their daily lives, such as brushes for entertainment, pens for records and markers for sketching.

“Alter”-pen is a multi-functional pen with alternative head. Only one pen can meet people’s different need. Meanwhile, Alter-pen is green and saves the button on the pen, and put the pen into the empty sockt, then the body will separate with the head, after that you can choose the head you want to use and enjoy it.

People can see the volume of the ink clearly from the transparent end.