3M™ Dual Lock™ Reclosable Fasteners have been used extensively in transportation, electronics, business equipment, machinery, medical and sign and display markets. When the mushroom-shaped stems interlock, tensile strength is high enough to replace mechanical fasteners in many applications, yet you can readily open and close Dual Lock fasteners hundreds of times. High Temperature and solvent resistant. Black, polypropylene reclosable fastener with a gray VHB™ Tape pressure sensitive 400 stems per square inch

Black, polypropylene reclosable fastener with acrylic-based PSA with 400 stems per square inch, gray, vinyl tape and clear polyethylene film liner, 230 mil engaged thickness with 400 stems per square inch.