Asvine Fountain Pen Ink Cartridges Black Color, Set of 30 Refill Ink Cartridges, 3.4 mm Bore Diameter

$ 3.25

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About this item LARGER PACK: 30 pack of 3.4 mm bore diameter black ink cartridges ( compatible with fountain pens take 3.4mm cartridges such as hongdian ). PS: These cartridges are not Standard Size, please ensure they work with your fountain pen before purchase! DIMENSION: Length Appr 51mm; Cartridge Diameter Appr4-7mm; bore diameter 3.4mm SMOOTH INK FLOW: With no break in ink flow, enjoy a smooth and optimal writing experience as your fountain pen glides elegantly across paper. NEUTRAL PH & NON-TOXIC: The ink has been carefully manufactured using only natural dyes giving the composition a neutral, natural, and non-toxic PH. QUICK TO DRY: HongDian Designs ink takes only a few seconds to dry ensuring your important writing moments are not ruined by smudges or smears.