Repair and reinforce book spines and covers. 1-mil clear, low glare matte finish. Protect hardbacks, paperbacks, magazines, maps, folders and documents. Reinforce hinges, mend torn pages, affix loose pages, repair documents, photos and drawings. Exclusive 1/8" Peel 'n Place Centering Strip. Acid-Free, non-yellowing adhesive, 3" core.