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, polyproplyene reclosable fastener with a white VHB ™ Tape pressure sensitive 170 stems per square inch

Black, polypropylene reclosable fastener with white acrylic adhesive on a red polyolefin film liner with no silicone release coating, 170 stems per square inch.