Now even the heaviest packages can withstand rough handling. Scotch® Heavy Duty Shipping Packaging Tape holds strong on all box types, even hard-to-stick-to 100% recycled boxes. It's even guaranteed to stay sealed. The strong, tough, solvent-free hot melt adhesive locks in your heavy-duty contents and locks out everything else, so you don't need layers of tape to get the job done, just one strip at a time. With Scotch® 3850 Heavy-Duty Packaging Tape, your heavy packages can bear the weight and stay sealed through it all. Value PackFour rolls with refillable dispensers (one dispenser per roll). Grade: Heavy-Duty; Core Size: 3"; Dispenser Included: Yes; Adhesive Material: Hot Melt Synthetic Rubber.