Vex robotics 406 4287 motor kit by hexbug vex 406 4287 p tired of operating vex robotics ball machines by hand want to power up several machines at once the vex reg robotics motor kit by hexbug reg will give your machines a steady source of power p p each kit includes a powerful motor with an in line on and off switch that allows you to put your machines to work while you watch the vex reg robotics motor kit is a great enhancement for all of the vex reg robotics ball machines p