The Water Ram is designed to be used on pipelines ranging from 1.5" to 6". It utilises the water hammer effect to clear blockages and has an effective range of up to 50m. The shock wave travels at speeds in excess of 1000m/second and hammers the blockage it encounters. Because the shock wave travels in the water, it doesn't matter how many bends or even how sharp the bends are, it will still work. The best part of all is that it is clean! This system is best suited for tight spaces, or in places where dirty tools would be a problem, such as restuarants, hospitals, aeroplanes and so on, it can even be used to clear shower traps without removing the grill. The only energy needed is muscle power. Pump up the ram and insesrt and pull the trigger. Its that simple! The water ram comes with a full set of instructions.