This kit designed to be used with axles parts from "YOKOMO NANOQLO" nano size rock crawler. The idea was to build a main frame that able to fit a professional/hobby grade micro electronic, 1s higher capacity lipo battery, solid axle movement and a smaller frame that able to mount aftermarket scale body shell sized/scaled between 1:35~1:43. 3D printing will produce small, lightweight and the first in the world to have nano size chassis upgrade for rock crawler for early year 2014. More details can be found at 3D printing page section - Click Here.3D printing page section - Click Here.