3M Dual Lock SJ3540-1X50 ~ Reclosable Fastener SJ3540 250 Black (1 Inch x 50 Yards)3M Dual Lock Reclosable Fastener SJ3540, 1 in x 50 yd (2. 5 cm x 45. 7 m) The 3M Dual Lock Reclosable Fastener SJ3540 is the easy and clear alternative to traditional fastening methods, such as screws, nuts, or bolts It is designed to deliver a durable, reclosable fastening solution that can be opened and closed multiple times, bonding to a variety of substrates, including many plastics and low surface energy materials. Part # 7000001980 Sold in qty's