1" x 150' Clear (1 Pack) 3M SJ4570 Dual Lock™ Low Profile Fasteners. Low profile fastener is half the thickness of standard dual lock fastener. Clear polypropylene, reclosable fastener with an acrylic adhesive. Self-mating. Bonds to metals, glass, plastics and powder coated painted surfaces. 75 feet of usable product. For use in temperatures up to 158 degrees F.