All Trodat self-inking stamps have a built-in stamp ink cartridge that can be simply replaced to prolong the service life of your Professional, Printy or Mobile Printy.
Trodat replacement ink cartridges guarantee uniform and outstanding quality from the first to the last imprint. Both the ink cartridge's material and its ink have been perfected during years of research. All Trodat standard stamp inks are indelible and the imprints will last for decades. 
Trodat ink cartridges are obtainable in two and three unit blister packs or ten units in a box.
You'll learn which replacement ink cartridge fits your stamp :
Professional Ink Cartridges
Original Printy ink Cartridges
Mobile Printy Ink Cartridges