OCCOA Fountain Pen Ink Cartridges 3.4mm Heat Erasable Refillable Ink Refills for Journaling and Calligraphy, Quick Dry Replacement for Office Supplies,Blue

3.4mm Replaceable Ink Cartridge Thermal Erasable Pen Refill Replaceable Applicable Black/ Blue/ Dark Blue Pen Accessories
Feature:
Quantity: 10Pcs
Colour: Blue
Material: Plastic
Product size: 5cm/1.97in
Package size: 10x5x4cm/3.94x1.97x1.57in
Netweight: 50g/0.11lb Gross weight: 50g/0.11lb Descrition: Thermal Erasable Technology：Crafted from thermosensitive microcapsule water-b ased color paste, our ink enables handwriting to v anish above 60°C and reappear below -15°C, supporting repeated writing and erasing without r esidue for hassle-free edits.
Physical Erasing Without C rumbs：The built-in pen-tail eraser uses frictional heat to remov e marks cleanly, leaving no c rumbs or paper damage—unlike chemical erasers that harm the paper surfaces, ensuring a tidy writing experience.
Sleek and Dependable Ink F low：Consistent, clear writing with low-volatility ink; if the nib dries after long storage, simply dip it in a nib moisturizer to r estore normal use quickly for dependable performance.
U niversal 3.4mm Replaceable Cartridges：Available in black, blue, and dark blue, these ink sac s are c ompatible with many f ountain pens, m aking refills convenient and cost-e ffective for long-term use without m essy ink bottles.
Double-Function Designs：The pen combines a writing nib and a erasing head, allowing seamless mistake correction by erasing and rewriting without extra tools—ideal for students, professionals, and daily use.
Package Content:
10x Ink Cartridge