This 1-color replacement pad is compatible with the S-857 and S-830D self-inking stamps. This pad features water-based ink which is best used on porous, clean surfaces. Choose one of our 5 standard or 6 premium 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!