- Superior lead formulation for minimal breakage during drawing. Designed for designers, architects, and students who require consistent line quality and reliable performance. - Reliable performance with a flexible inner core. Reduces lead breaks while preserving smooth drawing flow, ideal for intensive use and long sessions. - Comfortable handling for precise control. Ergonomic design minimizes muscle fatigue; reduced resistance at the start of a line enables accurate pressure control for meticulous work. - Responsible production without compromise. Optimized manufacturing reduces CO2 footprint through renewable resources and controlled processes, meeting eco-conscious expectations while maintaining writing quality. - Compatibility and size. Engineered for standard drawing pencils and common lead cores, delivering consistent performance across typical drawing tools. Use scenarios - Architectural drafting: long sessions of precise line work, cross-hatching, and technical drawings where durability and consistency matter. - Concept sketching and technical illustration: rapid iterations with reliable lead strength to avoid interruptions during ideation. - Classroom note-taking and diagramming: sustains smooth lines and comfortable handling through extended study periods without excessive hand fatigue.