For heavy-duty jobs, don't settle for a weak or ineffective tape--this high performance tape promises not to let you down. The polypropylene backed tape is reinforced with continuous glass yarn helping to make it very strong--with up to 380 lbs. per inch tensile strength. It provides an excellent resistance to nicks, abrasion and moisture. Plus, it utilizes a natural rubber adhesive, producing an ideal combination and balance of adhesion and high shear strength. With the Scotchparï¿½ polyester film backing, it's moisture-, abrasion- and curl-resistant. Tape Type: Packaging; Adhesive Material: Synthetic Rubber; Tape Special Feature: Synthetic Rubber Adhesive for a Stronger Hold; Width: N/A.