Pentel Graph Gear 1000 Automatic Drafting Pencil, 0.5mm Lead Size, Brushed Metal Barrel/PG1015/ + 4 RefillErasersStrength & Deep & Smooth Uni 0.5mm HB Top quality Diamond Infused Leads [Nano Dia-40 Leads] for Professional Value Set(with our shop original product description) It is smooth and they are a spare lead which cannot break easily, and the profitable set which attached Nano Daia (hot product of Uni) & 4Refill Eraser together The pencil for the pro whom the world accepts Chiseled metallic grip inlaid with soft latex-free pads provides writing comfort Superior drafting pencil for general and technical writing