If strength is your concern, look no further. The durable and strong design of this premium-grade filament tape makes it ideal for heavy-duty strapping and packaging where strength matters. The tape utilizes a hot melt adhesive, providing you with a stronger and more reliable holding power. For those heavy-duty and packaging jobs, the tape features a 300 lbs. per inch tensile (bursting) strength. To produce such a powerful tool, the tape is equipped with a film backing, reinforced with fiberglass filament. Comes with a 3" core and Meets US postal regulations.