Velcro HooksRef: 80016907
Coloured scanning electron micrograph (SEM) of a hooks and loops fastener. It is a two-sheet material which is used as a reversible fastener on clothing and fabrics. One sheet consists of hooks, the other of loops (not seen). When pressed together, the hooks attach to the loops, giving a secure grip but one that can be easily undone.
Magnification: x16 at 6x7cm size.