An iconic tool meant for a lifetime of use Unique "Twist and Click" mechanism retracts entire lead and sleeve for durability and pocket-safety Full metal body providing ideal balance of weight and feeling Hexagonal barrel ensuring fatigue-free writing and drawing Shaped to prevent the tool from sliding when laid down on tables Non-slip metal knurled grip 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