... security strip for library 1.Based on Cobalt amorphous strip 2.Compatible with 3M,Certus,Dialoc, Checkpoint ,Gateway system 5'' Double side ... EM security strip 125x4mm double side strip ,95mm tail length at each side . Used for school library ... . Also , we can supply all short anti-theif label for marchandies ,such as cosmetics ,drugs,cleanner essence ,jewely and ...