This is a  pack of (25) proximity 125 kHz clamshell cards, read only, non-printable credit-card sized credential. 

•  Reliable and Interference free - subjects carrying the card will not feel any interference when passing other electromagnetic objects
• Strong, Flexible and resistant to breaking -sturdy and robust, the card can even get wet and continue to function
• Photo ID Compatible - This card is too thick to fit inside a thermal printer, however you can print on thin 10 mil PVC adhesive cards that are adhered to the clamshell card
• Read-Only - printed number on the face of the card enables contactless reading by readers
• Pocket Size - enables users to comfortably carry it around with them
• Security - is known for its infinite number of reads
• Easily Identifiable -when the external card number is provided to system administration

PACK WITH 25 CARDS