999 Metal Stamp Punch Quality Jewelry Mark Ring Bracelet 999 Fine Silver 999 Fine Silver Silver Metal Stamp Punch; This is a new 999 Fine Silver metal stamp punch This stamp is for making a 999 quality mark/impression on Fine Silver jewelry piece; The bent shape shank also makes it easy to stamp the inside of a ring Made of hardened tool steel and measuring 3 3/4" Long x 5/16 Square; The 999 numbers will make a 1mm impression on your jewelry Just tap the stamp firmly with a hammer or mallet;