The 3M SJ3550 Dual Lock Reclosable Fastener is a strong, self-mating reclosable fastening solution designed for applications requiring a durable alternative to screws, snaps, or traditional hook-and-loop systems. This black fastener features interlocking mushroom-shaped stems that provide a secure attachment with high tensile strength while allowing repeated opening and closing. The 1 in x 2 in strips come with a pressure-sensitive adhesive backing for easy installation on a variety of surfaces, making them ideal for industrial, automotive, electronics, signage, and general mounting applications. The pack includes 100 individual strips for convenient bulk use.