Polyester fiber tape is ideal for attaching book jacket covers, as well as reinforcing pamphlets and magazines. The tape is a combination of tough, moisture-resistant polyester film laminated to rope fiber paper. While the tape resists tearing, processing is quick and easy when used with any standard 3" core tape dispenser. It adheres quickly and holds securely (50% more adhesion than acetate fiber). 5.5 mils thick. 3" core. 72 yards long.