.5mm Multi-color Lead Refill | Uni (Japan)

.5mm Multi-color Lead Refill | Uni (Japan)

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Contains nanodiamond, so it's clear and smooth with a super-strong core! Carefully selected graphite is uniformly and densely aligned to achieve a clear, dark line with low friction! The nanodiamonds blended between the graphite reduce friction between the particles. Smooth writing without any loss of strength