Usually ships within 1-5 business days [Brand new unopened item]

"From now on, stay clean." Newly developed, scratch-resistant, and adhesion core that keeps notebooks clean, with the new release of the Sharp Replacement Core "uni (ユニ)"

Product Features
■ Clear and dark, yet resistant to dirt (Smudge-Proof manufacturing method)
Due to the unique ingredient formulation, the core powder adheres tightly to the paper surface. It allows for clearly dark writing and, because it is resistant to smudging, keeps the notebook clean after writing.
To suppress dirt caused by rubbing between paper surfaces and contact with hands, this is an ideal Sharp Replacement Core for creating notebooks that can be reviewed multiple times.
*About the Smudge-Proof manufacturing method
This is a new manufacturing process that produces a core with high adhesion to the paper surface by incorporating a proprietary ingredient, thereby suppressing dirt.
Named after the English term Smudge-Proof, meaning resistant to smudging and bleeding, it retains the features of the conventional product such as "strong," "dark," and "smooth," with an added feature of "less likely to stain."
■ Even when highlighting with markers, the ink does not bleed easily
Even when using fluorescent or other markers, the spread of the core powder is suppressed, making the ink less likely to bleed and preventing paper stains. It also reduces dirt caused by core powder adhering to the marker tip.
■ Simple design case
Intentionally opaque with a matte texture that does not reveal the contents. Designed in off-white to blend into living spaces regardless of core diameter, with a simple, timeless case.
A circular indentation in the center of the case provides a visual accent and also serves as a finger grip for sliding the case open and closed.
■ Slide-type case for easy core removal
The simple slide operation allows for smooth removal of the core.

*The spread of core powder caused by rubbing after writing is defined as paper surface dirt. Under certain conditions, it suppresses dirt by up to 50% compared to conventional products. Results may vary depending on core diameter, hardness, paper type, writing pressure, and other conditions.
Dirt suppression results may vary depending on oil and moisture levels and contact strength.
【Core diameter】0.7mm
【Hardness】2B
【Size】Vertical 76.0×Horizontal 20.0×Thickness 7.0mm / Weight 6.3g
【Material】Outer case: ABS, Inner case: PP
Sharp Replacement Core, Lead Core, Dark, Smooth, Dirt-Resistant, Scratch-Resistant, Break-Resistant, Marker Stain, Slide Type, Easy to Write, Beautiful Writing, Elegant Characters, Smudge-Proof Manufacturing Method【Disclaimer】Please note that if the packaging is changed due to product renewal by the manufacturer, the product will be delivered in the new packaging.