This is a Carson Model Sport trailer product that fits and compliments all Tamiya semi-trucks. The 1/14 scale dumper semi-trailer is a detailed model of the dumpers used in local construction sites. Load up your dumper semi-trailer with cargo and off you go with a truckload of sand, flint or stones to the next construction site or a stone pit. With the separately available dump-mechanics (spindle drive with shaft joint Item 907056) the basin can be dumped, loaded and unloaded respectively. After lowering the basin, the back wall is secured automatically with a 2-hook locking system.