Pentel Mechanical Pencil Lead Refill Stein 0.5mm Hard HB

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The frame supports the core from the inside. Therefore, it is hard to break! Stein established a frame with reinforced silica inside the core. Because this frame supports the whole core from the inside, it realizes the highest level of strength. 0 Country of manufacture: Japan Material / component: ABS ・Polypropylene ・graphite