This replacement pad is compatible with the COLOP Printer R40 self-inking stamp. It features water-based ink which stamps great on documents, flyers, non-corrugated cardboard, receipts, and more. It comes in 5 standard and 6 premium ink colors for you to choose from. 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 below and then click the add to cart button!