The MONTBLANC Fountain Pen Ink Cartridge in Midnight Blue is a high-quality product made of durable plastic, originating from Austria. This pack includes 8 pieces, providing you with a steady supply of ink for your fountain pen. The midnight blue ink color adds a touch of sophistication to your writing, making it a stylish choice for any pen enthusiast. Upgrade your writing experience with these reliable and authentic MONTBLANC ink cartridges.