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premium writing experience for crisp
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uni-ball one UMR Ink Refill Color:Black or textbooks without interruptionUMR 38S UMR 05S Refill for uni ball one pens, designed for deep, vivid color and a smoother writing experience. Darker Black, More Vivid Colors: Special pigment ink produces sharper, more memorable writing. Proven to enhance memory retention in studies with Ritsumeikan University. Smudge Free & Fast Drying: Unique ink formula dries quickly without bleeding or feathering, even on regular paper. Minimalist Design: Refill body features a clean, straight
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