This replacement pad is compatible with the Trodat 4910 self-inking stamp. It features water-based ink that is great for stamping on documents, flyers, non-corrugated cardboard, envelopes and more. Make the best impression you can make with a choice of one of our 11 ink colors. It can be re-inked with water-based ink for extended use. Not recommended for glossy and non-porous surfaces. Select your ink color and then click the add to cart button!