This colored packaging tape works expertly to neatly seal poly-bags with our sturdy bag-sealers (items 40422 and 70497). The stout polyethylene assembly ensures a sealant that is guaranteed not to tear like paper products would. This colored packaging tape is fantastic for color coding items that are perishable. The firm bond is not going to release when used in high-humidity areas, making it safe for use in the refrigerator and freezer. Each roll has 540' and a 3" core.