Hang notes, photos and other lightweight items on metal, glass, wood, plasticï¿½most smooth surfaces. Two-sided adhesive with a removable liner securely holds objects. Precut squares. Four squares can hold up to 1/2 pound. Holds: Four squares can hold up to 1/2 pound.; Permanent/Removable/Repositionable: Removable; Mounting Application: Double-Sided Adhesive; Hanger/Hook Type: N/A.