The strip can be used full length or cut into shorter lengths with scissors, and comes with six magnetic tacks, each with a 1/4" rare-earth magnet in the 7/16" diameter plastic base. Each tack clings to the metal strip with enough strength to hold several sheets of paper. Additional magnetic tacks are available separately in a package of six.
Aside from the many obvious uses in the home or workplace, we found this system particularly convenient to hold project plans open above a workbench.