The handy and colourful MONO one eraser sits like a pen in the hand and allows a clean and easy erasing. The fine tip makes the exact erasing of small details like single letters or digits possible. The plastic holder has a turning mechanism to adjust the length of the eraser. A cap protects the tip when the eraser is not being used. It stays clean also in full pencil cases or narrow pockets.The four lively colour versions bring colour into the pencil case or to the desk.