Poolvergnuegen 896584000-143 2-Pack Blue Front Tire Kit with Super Hump Replacement for Select Pool Cleaners - concrete pool Front tire kit replacement with super humps Designed for pool cleaners 2X,4X and Pressure Used in pools with abnormally high main drains It is used on the front tires to stop the cleaner from hanging up Includes 2 tires per pack; available in blue color