3M DUAL LOCK - SJ 354 D - 25CM X 25MMReliably Strong, Over and Over Again 25mm When you need a strong, reliable attachment that also opens and recloses, look no further than 3M Dual Lock Reclosable Fasteners. Strong, interlocking mushroom shaped heads slide past each other to close with a snap, then peel apart easily when you need to reopen. 3M Dual Lock Reclosable Fastener strips make excellent quick release access panel fasteners and die cut pieces can also be used to attach