cable tie

[ key-buh l tahy ]
/ ˈkeɪ bəl ˌtaɪ /

noun

a plastic strip with serrations on one end that lock inside an opening on the other end, used to bind things together, especially wires: Wrap all of the cords behind your computer with a cable tie. Officers secured the suspect’s hands with cable ties when they apprehended him.
Also called zip tie.