Which eraser is the right one? The right choice of eraser is essential for the perfect erasing result. The kneadable eraser is mainly used in the artist section. All erasers are sutied for erasing graphite or colour pencils all erasers are very well suited. In general pencil drawings are always be better eraseable than colour pencil drawings. The red / blue combi eraser offers another special feature. The red side is for graphite and colour pencils and the blue side can erase ink.