These premium 0.5mm graphite leads deliver professional-grade performance with advanced smudge-resistant technology. The specialized formulation ensures superior adhesion to paper, maintaining crisp, legible marks without unwanted transfer. Enhanced with nano-diamond particles, the leads provide exceptional durability, consistent darkness, and refined smoothness across all writing applications. Ideal for precision work, technical drawing, and extended writing sessions where clarity and reliability are paramount. Each pack contains 40 leads.