Genuine HID 1326 ProxCard II Clamshell Cards Format: 26 bit (H10301) Facility Code:101 Range: Pre-assigned sequential range HID is the leading manufacturer of proximity cards, with access control systems in use at businesses around the world. HID prox cards are compatible with all HID proximity card readers. These durable HID ProxCard II Clamshell cards are made from thick PVC. Used in access control systems in office buildings, large company campuses, schools and universities, and transportation, clamshell prox cards are programmed for 125 kHz proximity systems. Includes a slot punch for a vertical card. If desired, you can customize your clamshell cards by printing your design on a thin CR79 10mil adhesive card and then applying the printed card to the surface of your clamshell card. You cannot print directly on clamshell cards using an ID card printer due to the thickness. Dimensions: 3.37 X 2.125 X 0.075 IN