The Staedtler 200 4H lead refill pack contains 12 high-quality graphite leads specifically designed for mechanical pencils requiring 0.5 mm diameter refills. These 4H grade leads offer exceptional hardness and precision, making them ideal for technical drawing, engineering schematics, architectural plans, and detailed sketching where fine, consistent lines are essential. With a diameter of 0.5 mm, these leads provide excellent break resistance while maintaining consistent line width throughout use. The 4H hardness rating indicates a light gray line with minimal smudging, perfect for preliminary sketches, construction lines, and detailed work that requires subsequent inking or tracing. Each lead measures approximately 60 mm in length, packaged in a practical plastic container that protects against breakage and facilitates easy storage. The graphite formulation ensures smooth application without skipping or crumbling, while the consistent diameter guarantees reliable performance in compatible mechanical pencil models. This pack of 12 leads offers substantial replacement capacity for frequent users in professional, educational, or artistic settings. The leads are manufactured to Staedtler's quality standards, providing dependable performance for technical professionals, students, architects, engineers, and artists who require precision drawing instruments. Compatible with mechanical pencils designed for 0.5 mm lead refills, these 4H leads represent a practical solution for maintaining drawing tools without compromising on line quality or technical accuracy.