Schneider standard ink cartridges Black ink cartridges Six ink cartridges per box Standard format ink cartridge with ball closure Compatible with Schneider and many other fountain and rollerball pens. Made in Germany. Schneider® Ink Cartridges in Black ink color with six (6) cartridges per box. Standard format ink cartridge with ball closure. Ideal for writers and creative minds who want to personalize their writing when bullet journaling, hand-lettering or writing letters, greeting cards, invitations and place cards. Compatible with Schneider® fountain pens, cartridge rollerball pens, and many other fountain and cartridge roller pens. Made in Germany. Made in Germany, Schneider® products are manufactured to the highest quality and environmental standards that have earned awards and accolades across the company's 80+ year history. Known for reliability, functionality and sustainability, Schneider® Writing Instruments are available at excellent price points to empower creativity and pen to paper. Each thought is worth writing down - the Schneider® way.