The Hammer Head pool cleaner is the ultimate in carefree operation. It comes fully assembled. Just add the seal and connect the hoses. No tools required and you’re on cruise control in minutes. It even comes with a free fl ow gauge and adjustable speed control to ensure optimum performance. The Hammer Head pool cleaner shares many of the design features of the most popular automatic suction side vacuum in history. Hammer Head features a new, patented silent flapper design. This sole operational moving part creates the kinetic energy that powers Hammer Head around your pool. Elegantly simple and highly reliable, this dependable design has been proven in more than 2 million pools worldwide.