3" Gray Colored Premium-Cloth Book Binding Repair Tape | 15 Yard Roll (BookGuard Brand) Repair or reinforce loose hardback book and media album spines with this tough tape Durable vinyl-coated cotton cloth tape is a hefty 13-mil thick with 45 lbs. per inch tensile strength Highly conformable with excellent abrasion resistance, will not crack over time Ultra aggressive adhesive permanently adheres to even the most difficult surfaces  even vinyl 3" core, 3"W x 15 yds.