Porduct: Ball pen, Mechanical Pencil, Fountain pen, Gel pen, Roller pen and pen set.

主营产品：圆珠笔，活动铅笔，钢笔，中性笔，对笔，笔记本等。

youdao

The company mainly produces roller-tip pens, ball point pens, Gel ink pen white board marker permanent marker, mechanical pencil and other stationeries.

公司主要生产水性笔、中性笔、圆珠笔、白板笔、记号笔、活动铅笔等文化用品。

youdao

Leather pen Usable type: ball pen, roller pen, fountain penRe.

水银笔，皮革记号笔，鞋类记号笔。

youdao

As he was saying goodbye, Derga gave the president a pen, a cheap roller ball he had used to write letter to his son in Iraq.

NPR: Behind Bush's Veto: A Father's Loss, a Humble Pen

If you give up on tablet writing, you can replace the tip to convert the pen to an old-fashioned roller ball.

WSJ: Putting Pen to Tablet: Using a Stylus With an iPad or iPhone