Postage Ink Cartridges + Replacement for Neopost IJINK3456H, 4105243U, 4139518X, / Suitable for IJ35, IJ40, IJ45, IJ50, IJ60 Machines / Fluorescent Red Ink Cartridge 100% Customer Satisfaction for your Neopost IJ35, IJ40, IJ45, IJ50, IJ60 Mailing System Made in the USA Replaces OEM part # IJINK3456H, 4105243U, 4139518X ISO9001 & CE Approved Yield: approx 17,500 Imprints or 18 Months