Waterman Ink Cartridges, Mysterious Blue (was Blue-Black). Long Standard Euro Cartridges are 2 7/8 inches long. Pack of 8 Cartridges.

Waterman Standard Cartridges, Intense Black. Long Standard Euro Cartridges are 2 7/8 inches long. Pack of 8 Cartridges.

PKR1950402  Parker Ink Cartridges, Permanent Black, pack of 5.​​​

SHF96380  Sheaffer Skrip Ink Classic Cartridges, Purple. Note that the cartridges now have one flat end and one indented end. The flat end goes into the nib end of your fountain pen. 5 Classic size cartridges per pack. (Temp out of stock)

SHF96350  Sheaffer Skrip Ink Classic Cartridges, Green. Note that the cartridges now have one flat end and one indented end. The flat end goes into the nib end of your fountain pen. 5 Classic size cartridges per pack. (2 avail)