This replacement pad is compatible with the Ideal 4923 self-inking stamp. It uses water-based ink that works perfectly on documents, flyers, non-corrugated cardboard, envelopes and other office materials. Choose one of our 11 stunning ink colors when you order this replacement pad and enjoy thousands of 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!