Agents for coloring keratinic fibers, containing at least one compound of formula, and at least one zwitterionic surfactant are disclosed and described. The system includes a drive unit having a plunger which is moved from a resting position into a lancing position in order to carry out a lancing process and a lancing unit containing a lancet with a needle. When the stent is in the reduced diameter configuration it is disposed about a portion of the catheter distally adjacent to the balloon. A dampening mechanism is provided to retard the return of the grips to their original position after they have telescoped inward after impacting with the user. An indo-skeletal structural arrangement proposed for the vehicle, provides further benefits by targeting the strength of the vehicle to protect passengers while minimizing other massive elements in the vehicle.