Australian Pathos shaft, made of 6.5 mm thick Sandvik steel, tip is tricuspid and single upper fin. The shaft has 3 fins: 2 in the back and one very advanced, so as to facilitate the loading of very long spearguns, rollers and pre-tensioned spearguns. One of the rear fins is perforated so as to be able to fix the nylon; this allows the use of these shafts also on spearguns equipped with shaft guides such as the enclosed Track series or on rollers and other propulsion systems that require it.