rOtring 800 Retractable Mechanical Pencil, 0.7 mm, Black (1854231). An iconic tool meant for a lifetime of use. Unique "Twist and Click" mechanism retracts entire lead and sleeve for durability and pocket-safety. The full-metal body has ideal weight balance for fatigue-free writing and drawing. Lead hardness grade indicator provides rapid identification. Hexagonal shape prevents sliding on tilted tables. Design, pattern and size of metallic grip zone enable working for long hours without slipping. Fixed lead guidance sleeve prevents breakage and gives a clear page view for ruler-based drawing. Brass mechanism for precision lead advancement. Limited warranty: guaranteed for 2 years from original purchase date against defects in materials or workmanship.