Waterman Paris Fountain Pen Cartridge Serenity Blue 8 Cartridges 2 Pack Large Size Standard Refills for Waterman Pens Smooth Flowing Inks for Luxury Writing

Waterman Standard Long Cartridges for Fountain Pens, Intense Black, Box of 8 (S0712991)

Waterman Expert Black with Golden Trim, Fountain Pen with Medium nib and Blue ink (S0951660)

Waterman Kultur "Phileas" Translucent Blue CT Fountain Pen - Fine Nib

Waterman Standard Long Cartridges for Fountain Pens, Mysterious Blue, Box of 8 (S0110910)

Parker Quink Permanent Ink Fountain Pen Refill Cartridges, 10 Blue Ink Refills (3016031PP)

Pilot Namiki IC100 Fountain Pen Ink Cartridge, Blue, 12 Cartridges per Pack (Pack of 2)

Waterman Large Size Ink Cartridges 8 Pack - Serenity Blue

Waterman Standard Long Cartridges for Fountain Pens, Serenity Blue, Box of 8 (S0713021)

Sheaffer Skrip Fountain Pen Ink Cartridges Blue - Pack of Five

LAMY Cartridges Refill, Blue, Pack of 5 (LT10BL)