This is the New Super Gizzmo. Designed to absorb the expansion of winter freeze-up for inground swimming pool skimmers. The New Super Gizzmo is 16 inches long and installs in big, deep skimmers of most inground swimming pools. The Super Gizzmo has both 1.5 and 2 inch threads and features a generous bar-style handle. The double threads offer convenience by accomodating most skimmers with one item. For a professional fit, the Gizzmo can be used with teflon tape. Teflon tape is a very thin, white tape used to wrap the threaded ends of pipes to improve the water tightness of a joint. The Gizzmo is designed for single season use. Please remember to recycle this product.