1.25 Inch washer with 1/4 inch ring soft strike aluminum premium stamping blank. New Soft Strike stamping blanks are softer than standard blanks allowing for deeper and more detailed impressions with less effort. Use these stamping blanks to make personalized jewelry, dog tags and crafts with metal stamps, texturing hammers, doming blocks, paint and more. Use a permanent marker to fill in your designs and clean with a polishing cloth. 16 gauge.