1. Cobalt-based 2. Magnetic strip 3. Size:10x63mm Made of cobalt with last effect.Compatible with all the existing brand EM systems such as 3M,Certus,Checkpoint,Dialoc etc,Environment-friendly:all the strips RoHS Approval and do no harm to humans.The strip's length can be customized according to customer's requirementsMore Specification;10*40mm,10*51mm,10*63mm,10*90mm,10*95mm,10*160mm EM Label