NPD: Lamy joy 1.5, ink: lamy blue t10 : r/fountainpens
Lamy T10 Blue 5 Ink Cartridges - Stilo&Stile
Amazon.com : LAMY T10 ink cartridge with large ink supply - large capacity cartridges in the colour tourmaline for all Lamy cartridge fountain pen models - 1 packet : Office Products