Drain King 345 Drain Opener/Cleaner, 50 to 80 psi Pressure, 3/4 to 1-1/2 in Drain

Connects to garden hose to unclog kitchen sinks, bathtubs and showers. Expands and locks itself in pipe when water is turned on. Pressure forces strong jets of water through surge valve to discharge blockage, even if its 1000 ft down the line. Can also be used for clearing heating and A/C drainage pipes, bath sinks and swimming pool lines. No chemicals, will not harm pipes.