This replacement pad is compatible with the trodat 44055 self-inking stamp. The water-based ink of this pad is great for stamping on documents, flyers, non-corrugated cardboard, envelopes, and more. Pick from our premium ink colors when you order this product and enjoy thousands of impressions. It can even be re-inked with water-based ink for extended use. Not recommended for glossy and non-porous surfaces.