At the processing can not be faulted; Both connectors are fit and function reliably. The cable is long enough to reach even an MP3 player in the rear storage compartment of the center console (in addition to the handbrake) (at least in a BMW E36).
A strain relief there is not (is not provided in the ISO connectors). With strong train the cable can thus tear (which fell on after my car broken and the car radio was expanded by force). In normal operation I had no problems. Would I put the cable, however, by the foot space, I would save it at least with a cable tie to the radio or to the (stable) power cable.
