This tape roll cassette is for the Brother P-Touch Pro PC label printer. It yields black print on a clear background and is 1/2-inch wide and 50 feet long. Label yields vary as label length is determined by the user. The tape is an acrylic film with characters printed underneath the lamination for durability. These labels are self-adhesive and will stick to most clean and smooth surfaces and are waterproof. They can resist extreme heat and cold, abrasive conditions and many chemicals, which makes them ideal for many industrial applications.