A kind of aluminium extrusion, is integrally formed, one first V shaped slab and one second V shaped slab that are oppositely arranged comprising recess and a support rib. Wherein formation one axis in a junction sets portion for first V shaped slab and second V shaped slab. The axis sets portion and is arranged for a wheel shaft. The support rib is arranged between what first V shaped slab and second V shaped slab, and two-phase side portions Lian Jie not what first V shaped slab and second V shaped slab.一種鋁擠型件，為一體成型，包含凹口相對設置的一第一V形板及一第二V形板，及一支撐肋板。該第一V形板與該第二V形板其中一連接處形成一軸設部。該軸設部可供一輪軸設置。該支撐肋板設置於該第一V形板及該第二V形板間，且兩相反側部分別連接於該第一V形板及該第二V形板。
