Strength & Deep & Smooth -Uni-ball Extra Fine Diamond Infused Pencil Leads, 0.5mm-H-[nano Dia]40 Leads X 3 Pack/total 120 Leads/(with Values Japan Original Description of Goods) Uni develops the lead of the top quality Intensity of the lead was sharply strengthened by blending the particles of a diamond Since particles have aligned by high density, it can write distinctly still more deeply And it can draw more smoothly My Store is The goods of High quality and popular Japan are selected carefully and it sells with reasonable set pricing. Since many inexpensive sets are sold, please search by "Value set".