Donaldsons Pilfer Proof Kraft Fiberglass Reinforced Grade 233 Security Packaging Tape 2-3/4" x 600' (1) Comes with Free How to Live Stress Free Ebook Stop wasting money on tampered product; Comes with Free How to Live Stress Free Ebook Provides secure closure for heavy packaging Water activated tape will never dry out or become damaged due to heat or age Top grade fiber glass reinforcement keeps your boxes professional and tightly sealed Warning label protects your customers and yourself from tampered products