Koh-I-Noor, a century-old Czech stationery manufacturer whose quality is as hard and immortal as a diamond, uses FSC certified woods to make every pencil. The dual-purpose pen combines a pencil and an eraser simultaneously, which is especially suitable for crossword puzzles and Sudoku lovers. Even ordinary writers can really feel the convenience of the dual purpose of this pen. It is a practical pen with both texture and function.