Scotch Extreme Shipping Strapping Tape, Designed For Your Toughest Jobs, 1.9 Inches x 21 Yards (8959-RD) Reinforced across length and width with continuous fiberglass filaments Super strong, durable hot melt adhesiveseals and protects Ideal for heavy tasks and bundling Resists moisture 5.1 mil thickdelivers extreme tensile strength for the heaviest, toughest jobs