This replacement pad is compatible with the Trodat 4913 self-inking stamp. It features water-based ink which works great on documents, flyers, non-corrugated cardboard, envelopes and more. Choose one of our 11 ink colors so you can make thousands of vibrant impressions. It can even be re-inked with water-based ink for continued use. Not recommended for glossy and non-porous surfaces. Select your ink color and then click the add to cart button!