- Round hole of 5 mm diameter that enables you to clip and wear them - Compliant with ISO CR-80 standards: Length: 85.6mm and width: 54mm - Pack of 100 cards Pre punched cards for easy identification These cards can be used in several cases to identity your visitors or your business partners by a simple and cost-effective way. For instance, in a punctual event, your visitors can wear their badges and then be identified without a badge holder. Storage information Avoid dust, direct sunlight, high humidity and high temparatures. Do not place near solvent or other chemicals.