2" x 150' Black 3M SJ3552 Dual Lock™ Fasteners. Fastens heavy items creating a more permanent bond. Rigid plastic stems interlock for hundreds of closures._x000D_ Acrylic adhesive on the back of a polypropylene, reclosable fastener._x000D_ Type 170 stem density mates to types 250 or 400 but not to itself._x000D_ 150 feet of usable product. Does not interlock with itself._x000D_ Designed to bond to metals, glass vinyls, and medium to high surface energy plastics and paint._x000D_ Excellent UV, moisture and solvent resistance._x000D_ For indoor/outdoor use in temperatures up to 200 degrees F._x000D_ Stems interlock with DK3M135 or DK3M120.