50 pcs 26 Bit Proximity Clamshell Weigand Prox Swipe Cards Compatable with ISOProx 1386 1326 H10301 format readers and systems. Works with the vast majority of Keyless entry access control systems COMMON FORMAT: 50 26 Bit access control cards formatted with the 26-bit H10301 standard format used on most access control security systems. COMPATIBLE: These isoprox compatible contactless cards work with the same 26 bit weigand readers that both the 1386 ISOProx and 1326 ISOProx key cards work with. Compatible 125khz card readers include: Proxpoint Plus, Thinline II, MiniProx, RP40, RP10, RPK40, RP15, Prox80, ProxPro, EntryProx 4045, Bosch ARD-AYJ12, Viking PRX-2, and many more. APPEARANCE: 85mm X 54mm X 0.8mm white clamshell keyless entry cards SITE CODE: These RFID access control cards come in the site code 100