An electrical connector assembly comprises a receptacle connector and a plug connector to be connected to the receptacle connector. The device includes an electrically adjustable seat, independent left or right electrically adjustable stride and an electric flywheel drive to assist the operator. Both two-dimensional and three-dimensional configurations use the same foundation basics. A polymeric outer tube is positioned longitudinally around the coil and the inner liner, and is bonded to the inner liner through the spaces between the turns of the coil.