JVCC BOOK-20CC Crystal Clear Book Repair Tape is an ultra-clear polypropylene film tape with a non-yellowing solvent-based acrylic adhesive. It is used for book repair label protection and lamination. JVCC BOOK-20CC is also UV resistant. Notes: Sizes shipped will typically be the tape industry standard metric-cut sizes i.e. 24mm for each 1 of nominal tape width ordered (rolls are approximately 5% narrower than the nominal size). This product s actual size is 50mm wide. This tape is typically cut to width from log rolls so most sizes ship on non-branded plain white cores. As with any adhesive tape product it is always the user s responsibility to determine that the product is suitable for their intended use; e.g. if you want to remove a product cleanly from a specific type of substrate please test on an inconspicuous area first. Warning: This product can expose you to chemicals including Benzene which is known to the State of California to cause cancer and birth defects or other reproductive harm.