The quality of an eraser and using the correct eraser are crucial for optimum results. Basically, two different materials are used to make erasers: rubber and plastic. All rubber erasers and the majority of the plastic erasers made by Faber-Castell are Latex-free. Faber-Castell Latex-Free erasers do not contain Latex derivates. The balanced plastic mixture guarantees soft and smear-free erasing.\r\nCombination eraser made of synthetic rubber\r\nRed side for graphite pencils\r\nBlue side for ink\r\n