["brand new and high quality\nFeatures:\nIndependent ink tube, easy to carry and use, take out the pen of the suction apparatus, and then put the ink sac, after a few seconds can be writing.\nInk particles are fine, good fluidity, easy to plug the pen.\nWith no break in ink flow, enjoy a smooth and optimal writing experience as your fountain pen glides elegantly across paper.\nThe ink has been carefully manufactured using only natural dyes giving the composition a neutral, natural, and non-toxic PH.\nInk takes only a few seconds to dry ensuring your important writing moments are not ruined by smudges or smears.\nSuitable for the pens with 2.6/3.4 mm caliber.\n\nSpecifications:\nMaterial: Ink\nLength: approx.5cm/1.97in\nOptional Colors: Blue, Blue Black, Black, Red, Erasable Blue\nCaliber: 2.6mm / 3.4mm\nQuantity: 10 Pcs\n\nNote:\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Included: \n10 x Fountain Pen Ink Sac (other accessories demo in the picture is not included.)"]