High performance. Polypropylene backing reinforced with continuous glass yarn. Typical 300 lb/inch width tensile strength with aggressive adhesive for low unit cost, medium-duty closure, reinforcing, and holding. 3M has developed a line of high performance tapes with a range of characteristics to meet different bundling requirements. Width tensile strength ranges from 120-380 lb/inch with good to high shear, and good to excellent aging.