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Diamine Blue-Black fountain pen ink. Diamine fountain pen ink is safe to use in any of the fountain pens we sell.
FPR Royal Flush Blue Fountain Pen Ink
Fountain Pen Revolution
FPR Blue-Black Fountain Pen Ink
FPR Mardi Gras Fountain Pen Ink - Purple Sheening Ink
FPR Classic Black Fountain Pen Ink