3M Dual Lock Fastener MP3560 Clear 25mmx4m, Pack of 23M Dual Lock Reclosable Fastener MP3560 is the translucent, convenient alternative to traditional fastening methods, such as screws, nuts or bolts. It is designed to deliver a durable, reclosable fastening solution (which can be opened and closed multiple times) that bonds to a variety of substrates including metals, glass and plastics such as acrylics, polycarbonate and ABS. Clear. 25mm x 4. 5m. Pack of 2. Purchase 5 packs to receive a carton.