Now the USA has access to what’s incredibly popular in Europe & the Singapore Exchange. These One Kilo Stackers provide a great size to stack. Equals 32.15 troy oz and measures 76mm x 51mm x 28mm. This Kilo Silver Bar has beveled, interlocking edges that stack for safekeeping. Unique Serial Numbers and we are ISO 9001-2015 certified, allowing these to be placed in an Precious Metal IRA account. Brand New .999 Pure Silver Bullion Grade MADE IN USA. Vault Ready.