Waterman Mini Lady Fountain Pen Ink Cartridges Black, Blue, Red, Purple, Pink and Green Bundle of 36 Cartridges Waterman Mini Cartridges Bundle of Black, Blue, Red, Purple, Pink, Green Each pack has 6 cartridges Smooth flowing ink adds to the sophisticated experience of writing with a classic fountain pen Ink cartridges are convenient, neat, and simple to use and replace. International cartridge fits all Waterman Fountain Pens and many other major brand fountain pens