These pads are suitable for the Trodat Professional line of stamps with their sustainable ink and prolonged life cycle. Ideal for any business or individual using the stamp regularly, these ink pads are sold in multiple packs ensuring a long-lasting stamping experience. By using ink cartridges & replacement pads for Trodat Professional, you are assured that your stamps always provide clean, consistent prints. Both the material of the ink cartridges as well as the ink have been perfected over the years. That's why a Trodat ink cartridge works just as well in the cold as the tropical heat. Dirty fingers when changing the date? Not with Trodat Professional Line cartridges. The raised grip edge on the cartridge prevents the fingers from coming in contact with the dye of the pad - the fingers remain clean.