This tough and durable tape on a 3-inch core is a hefty 13-mil thick with 45 lbs. per inch tensile strength Non-reflective vinyl-coated cotton cloth will not crack over time Highly conformable with excellent abrasion resistance Adhesive permanently adheres to even the most difficult surfaces Can be written on with pen or marker Bookguard 3/4" x 15 yd Cloth Book Binding tape roll