These blank white plastic cards have both a HiCo 4000oe magnetic stripe and a LoCo 300oe magnetic stripe both on the same side of the card. 

These cards are high quality and fully compatible to be overprinted with any ID card printer.  Standard credit card size (86mm x 54mm) and thickness (760 micron/30mil).

Shrink wrapped in individual packs of 100 cards per pack.