Card-tech 250pcs 2750 OE Magnetic White 25mil(0.63mm) PVC Cards Plastic Credit Gift Card Photo Card Magnetic Stripe Card Material: Environment friendly solid PVC, Grade A same bank card material ISO size: 54*85.5mm (2 1/8 * 3 3/8 inch) , die cut size and shape is accetable Thickness: 0.63mm(25mil)Please note the specifications required for the purchase Printing: white magnetic stripe: 2750 OEThey are blank and we didn't encode anything into track. You may encode the information by writer Card face a plus film, the surface of the print bar codes, text, graphics, portraits, digital, etc.