The blue color of the Alvin Threaded Edging Tape-Blue makes it easy to color-code your documents and papers. Whether it's a drawing, a business document or anything else on paper that you want to keep, edging it in this royal-blue edging tape will help you to keep it organized. By color-coding your papers, it's easy to see at a glance which type of papers you have in front of you. This tape is tear proof to provide superior protection for the edges of your papers. The PVC material makes it smooth, easy to apply and durable. Each roll measures 1/2" wide and is 80 feet in length. The core size is 1 3/8". The tape is packaged with 10 rolls per box. This edging tape is simple to use, has a color that is easy to see from a distance and is tough enough to protect your important papers that need protecting. Alvin Generic Reinforced Edge-Binding Blue Tape.