Ordering Unit: 100/PK2" X 4" with 5/32" diameter hole and 12" wire attached SCOT-TAGS unique layered construction makes them the longest-lasting hand-engraveable tags on the market. Their thick aluminum alloy outer layer has a soft, smooth surface. What makes SCOT-TAGS different from other tags in the market? They are so easy to use, you can hold the tag in your hand while imprinting information permanently onto either side with a ballpoint pen, pencil, or other pointed object. Additional sizes, colors and imprinting is available call for details.