2-3/8" ImpressArt® raw copper Premium crescent blanks. 18 gauge. Add holes as desired with 2-hole punch, hole punch pliers, or a drill. ImpressArt Premium Stamping Blanks™ feature smooth, rounded edges, a brighter finish, and thicker gauges. These thicker blanks allow for more metal to be displaced when stamping, resulting in deeper impressions. Premium Stamping Blanks™ look and feel substantial and will elevate your finished pieces. Some blanks may have light scratches and blemishes that can be polished.