Unopened, new mechanical pencil lead refills: B: 2 packs HB: 2 packs Total: 4 packs Reference price: 220 yen x 4 = 880 yen I am selling these at a low price, including shipping. Pentel 0.5 x 60mm, 40pcs, 40 leads per pack Pentel's Hi-Polymer lead is the world's first mechanical pencil lead to incorporate synthetic resin. It is exceptionally break-resistant. Through a combination of high-purity graphite and resin, it offers a smooth writing feel and a strong structure that prevents breakage. This technology achieves a high level of both strength and density, producing dark, clear lines. It is a time-tested mechanical pencil lead. Pentel is an excellent company, even in the stationery industry. I have used these leads for a long time because I can't concentrate when the lead breaks during exams, and I find it stressful when the lead breaks while drawing blueprints. I continue to use Pentel lead refills because they save me from the hassle of smudged paper and the time and stress of clicking the pencil. These cases will be arranged flat, taped to prevent shifting, and then placed in a bag for standard mail shipping. The lead refills are in hard cases, so the cases themselves should not break. However, I cannot be held responsible for any damage to the lead refills inside during shipping. Please understand this before purchasing. Keywords: Mechanical pencil, lead refills, ballpoint pen, pen, Pentel, stationery, refills