This Stabilo Worker+ Colorful Rollerball Pen contains liquid ink for an ultra smooth writing experience. The non-slip barrel is covered in a velvety soft material, which makes it very comfortable to hold for both right and left handed users. It has a practical pocket clip to keep the pen on hand, wherever you go. Ideal for note taking at home, in the office or at school. The pen writes with a 0.5mm line width and has super-fast drying ink. This pack contains 10 pens with a black barrel and black ink.