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Don't be fooled by the compact size of this ballpoint refill. Depending on the point size, these high-capacity refills can write for 4,500 to 8,000 meters!
The M16 waterproof refill is compatible with all 2000, Accent, Aion, Al-Star, Econ, Imporium, Logo, Lx, Noto, Safari, Scala, and Studio model ballpoint pens.