9/64 x 2 Inches Aluminum Ring Stamping Blanks - Sizes 4-6. 18 gauge. This rectangular stamping blank is great for making personalized rings. Use the Ring Bending Pliers (TL00282) to aid in bending the blank into a ring. Finish it off by using an enamel marker or stamp enamel to fill in your designs and clean with a polishing cloth.