Frame color: all black and blue-black Wheelbase: 90-124mm adjustable Width: 70-85MM adjustable Difference between the two versions: The official version of the big teeth is metal, lightweight version is plastic The official version of the bottom plate connection plate is metal, lightweight for carbon fiber The second base plate above the steering gear is made of metal enamel and carbon fiber. The official version comes with a set of metal L-buckles (for Kyosho shells), the light version does not come with L-buckles.