ISINK34, IMINK34, 4135554X Compatible Replacement Cartridge - 90 Day Warranty for IS / IN Series Mailing Systems Use in: Neopost: IS330, IS350, IS420, IS440, IS460, IS480 Use in Hasler IM440, IM330, IM480, IM420, IM460, IM350 Compatible cartridge, not OEM Guaranteed to work. Sold only by Discount Supply Company