EM security strip for library 1.Based on Cobalt amorphous strip 2.Compatible ... Single side strip ,25mm tail length at one side . Used for school library , public library and bookstores. Also , we can supply ... all short anti-theif label for marchandies ,such as cosmetics ,drugs,cleanner essence ,jewely and ... . 7. Good concealment. 6.5'' single side EM label for book