Guaranteed to Stay Sealed (If your box does not stay sealed, 3M will refund the purchase price of this tape. Proof of purchase required. Contact: 1-800-3MHELPS) Provides excellent holding power for heavy-duty packaging and shipping Provides excellent holding power for heavy-duty packaging and shipping Strong, durable solvent-free hot melt adhesive seals and protects Release coating makes unwind easy. Resists slivering, splitting and tearing. Includes 12 rolls with 12 dispensers with fall-back tabs to ensure tape doesn?t fall back on the roll Scotch Brand?s strongest clear-to-the-core packaging tape Scotch Heavy Duty Shipping Packaging Tape seals seams with one strip and keeps boxes closed. It also resists slivering, splitting and tearing. Now even the heaviest packages can withstand rough handling.