Fastens heavy items creating a more permanent bond. Rigid plastic stems interlock for hundreds of closures. Acrylic adhesive on the back of a polypropylene, reclosable fastener. 15 feet of usable product. 2 rolls per pack. Designed to bond to metals, glass vinyls, and medium to high surface energy plastics and paint. Excellent UV, moisture and solvent resistance. For indoor/outdoor use in temperatures up to 200 degrees F.