You've got three devices in the car and three different DC plug sizes. Or you lost the adaptor that came with your last purchase and now you're hunting for a matching tip across five stores. This one cable covers all eight common barrel sizes. 1.8 metres of reach runs from the front socket to the rear seat without stretching. LED tells you it's live at a glance. Internal fuse sits between the socket and your gear. Unregulated output — pair with a regulated supply if your device needs a clean voltage