Gadow Jewelry Heart Stents Medical ID Alert Necklace with Medical Star You can take off the red silencer or caduceus charm if not needed. Military stainless steel tag measures 2 inches by 1 1/8 inches. Standard Military size. Stainless steel chain is 30 inches. You can snip the chain to make it smaller. Embossed Text which is easy to read. Will never wear off. The caduceus charm is the same on the front side and on the back side.