Eco-friendly pencil for demanding school supplies. As is well known, you need the best writing instruments to make the most of your education. Lecture notes, dissertation comments, or library research must be written with pencils that do not break and provide a high standard. The hard pencils from the Swiss company Caran d'Ache deliver reliable performance even during intensive library work. The graphite writing material is harder than that of an average pencil, allowing it to withstand greater pressure. The pencil shaft is made of soft wood, which optimizes the pencil tips and ensures a clean cut at the end. The ergonomic hexagonal shape has been designed with maximum comfort in mind.