The throwing lance may be distinguished from a harpoon because of the fact that all its pieces are fixed and immovable. A lance was a weapon of war and it was also used to kill large marine animals after it has already been harpooned. The throwing lance usually consisted of three parts: a wooden shaft, a bone ring or belt, and the compound head that was made with a barbed bonehead and a stone tip. The length of the compound head was equivalent to the distance between the planes of a man's chest to his back. The lance would penetrate the chest and pass through the chest cavity and exit from the back. The bone ring was designed to break after impact so that the shaft could be used again for another kill.