MIFARE 4k Classic EV1 NXP genuine technology cards with a HiCo 2750oe magnetic stripe.  

These blank white technology cards are both high quality and fully able to be overprinted with any ID card printer. Each card has a contactless chip inside it operating on the 13.56mhz frequency with a 4k memory size and 4 byte UID number. In addition one side of the card has a HiCo 2750oe magnetic stripe on it. 

Standard credit card size (86mm x 54mm).

Shrink wrapped in individual packs of 100 cards per pack.