This replacement pad is compatible with the Trodat 4915 self-inking stamp. The water-based ink of this pad is best for stamping on documents, flyers, non-corrugated cardboard, envelopes and more. Pick from our 5 standard or 6 premium ink colors when you order this replacement pad and enjoy thousands of impressions. Re-ink it with water-based ink for maximum longevity. Not recommended for glossy and non-porous surfaces. Select your ink color and then click the add to cart button!