CALIBRATION ID, Polyester Wrap-Around Label, 120 Labels / Book, 6" x 0.25" These screen-printed calibration labels offer great solvent and water resistance. A permanent high-bond adhesive is great to use on irregular surfaces. These polyester labels have a clear tail that wraps around a tube or handle. High quality polyester film features a special coating allows this material to be written on using a typewriter or ball-point pen without smudging.