1" x 15' Black 3M MP3541/42 Dual Lock Mini Pack Fasteners $646.93 1" x 15' Black 3M MP3541/42 Dual Lock Mini Pack FastenersFastens heavy items creating a more permanent bond.Rigid plastic stems interlock for hundreds of closures. Rubber based adhesive on back of a polypropylene, reclosable fastener. 15 feet of usable... Add to Cart