- The pens write amazingly;
- The big eraser that comes with each packet is soft, doesn't damage the paper it's being rubbed on and erases the ink very well;
- The pen comes in a color matching its ink color, which makes it easy to distinguish from the rest of the pens;
- It's a great price for 11 pen fillers (1 comes in the pen itself) and an eraser;
- The ink strokes are around 0.5 millimeters so you can make nice and fine strokes.