Alkeme Stamping Blank, Circle with Hole, 1 1/4 24 pieces Try Alkeme stamping blanks, the new alternative to silver. Developed by ImpressArt specially for metal stamping, Alkeme is easy to stamp, non-corrosive, and costs a fraction of the price of silver. Alkeme is lead, nickel, and cadmium free. Some discs may have light scratches and blemishes that can be polished. These are 1-1/4" circles with hole.