Bandai developed these kits with ease of build in mind as they require no tools to build. The individual pieces are attached to the runner by a very thin piece of plastic so that they can be broken off by hand or by a parts separator. The assembly process can be sped up even more as the runners have been developed in a way so that you can attach two together and break off the individual pieces that way. Bandai also included a 'Double Separator' tool to help with the new method of building.