Pack of 100 Shrink Bands - Perforated - 100mm X 28mm - For Bottle Caps 2" to 2 1/2" in Diameter Pack of 100 100 mm x 28 mm Use to seal jars, bottles, etc with a cap of 2" to 2 1/2" in diameter. Shrinks quickly with a heat gun or hair dryer Perforated