This replacement pad is compatible with the Trodat 4929 (1-color pad) and 4729 (dater, 2-color pad) self-inking stamps. It features water-based ink which is great for stamping on documents, flyers, non-corrugated cardboard, envelopes and more. Add some color to your impressions with your choice of one of our 11 stunning ink colors. 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!