The EM4200 Hi-Co magnetic stripe proximity cards are high-quality access control cards that can be used with all plastic ID card printers. These cards are designed to work with electronic read-only RF transponders and come equipped with a high coercivity magnetic stripe that ensures secure data storage.Product Features:Sold in packs of 100CR80 card size (86mm x 54mm)Hi-Co magnetic stripe (2,750 Oersted)