This simple design provides much needed support to keep your skimmer safe throughout the winter. The bottle design allows the Gizzmo to absorb the expansion of the winter freeze up that occurs within the skimmer.The Regular Gizzmo measures 9” long with a 1.5” thread width that fits most skimmers. For added convenience the Gizzmo comes with a bar style grip that allows for easy use and handling. Simply wrap Teflon tape around the threads to add to the water tightness and thread into place. This is a one time use product that can be recycled after each use season.