3M SJ3540 Reclosable Fastener 1in X 6ft Used for Interior signage; decorative trim attachment; kick plates on office partitions; window valences The fasteners consist of continuous strips of polyolefin with polyolefin stems having a mushroom shaped top. The mushroom heads allow the fasteners to easily slide over each other allowing positioning of parts before they are snapped together creating a firm fastening attachment. They offer greater design flexibility, faster product assembly, smoother and cleaner exterior surfaces and improved product performance in many applications. 3M Dual Lock Reclosable Fasteners offer advanced closure alternatives to zippers, screws, snaps, hooks, bolts and more. Simply peel the pieces apart by hand to disengage. Access panels on exercise equipment and attaching accessories to computer monitors