Tsukineko-staz-on Mustard Ink Pad. Staz-on is a solvent-based ink designed for decoration on non-porous surfaces such as glass, metal, shrink plastic, cellophane, aluminum foil, leather, and acrylic. You will achieve a beautiful stained glass appearance due to the transparent nature of the ink. Mild smell and safe to use. Acid-free and water soluble for easy clean up. Stamp pad measures 2-1/2" x 4" x 3/ 4".