This jumbo ink pad provides long-lasting stamping results that are permanent on many surfaces. Get a crisp image that does not bleed over water-based inks, markers, acrylic paint, watercolors or pigment powders. This oversized ink pad is great for brayering and provides easy inking of large stamps. Details:Jet black4.25" x 6.25" (10.8cm x 15.88cm) pad size6 ink padsAcid free and nontoxicWaterproofPermanent on matte and gloss papers, heat set on glossy surfaces