The Pilot IRF50S10B Fountain Pen Ink Cartridge Refills in a 50-count black pack present a practical and dependable method for supplying your Pilot fountain pens with fluid, deep black ink. Crafted for daily application, these refills guarantee steady ink delivery and vivid lettering, elevating your writing encounters whether in the office, classroom, or at home.

Containing 50 cartridges, this item delivers superb value and an extensive provision for avid writers. Suitable for the majority of Pilot fountain pens, with the exception of Custom 823 and Custom Heritage 92 models, these black ink refills are perfect for individuals who value excellence and ease in their writing instruments.

• Product Material: Ink

• Manufacturer: Pilot

• Works with most Pilot fountain pens, excluding Custom 823 and Custom Heritage 92 models
• Fluid, even black ink for distinct and bold script
• 50-cartridge pack provides an ample, enduring supply
• Simple to fit and exchange in suitable pens
• Optimal for routine writing, jotting down notes, and professional applications

To insert, take off the pen cap and unscrew the barrel. Firmly place the refill into the pen's ink chamber until it secures. Put the pen back together and let a short time pass for the ink to start flowing. Change refills when the ink is depleted. Keep unused refills in a cool, dry location, shielded from direct sun exposure.

Maintain refills sealed until needed to stop the ink from drying. Keep in a cool, dry setting, away from intense temperatures and direct sun. Prevent eye and skin contact. Discard spent cartridges responsibly and avoid exposing them to strong chemicals or wetness to preserve ink quality.