The pins fit comfortably in your hand and the square shape they do not slip away also.
The color selection is very good. There are several colors of different color levels, for example in shades of green. Degrees in painting from plants or plastic structures is a gradient very nice and everything can be deep, true, act.
The color intensity can be varied by the individual pressure, the stronger is pressed, the stronger the effect colors.
While erasing the strong colors turn out unfortunately rather than disadvantage. Since I have but (with various erasers) problems removing these "invisible".
Unlike many other pins the Faber Castell are very robust. Even after repeated drop the Mine stops not continuously.
~ ° ~ ° ~ ~ Conclusion
Who paint the little careful (because the colors are difficult to erase) may very well have a screen with this set of his creativity.