3/4x3/4x12 wtr connector. Used for installing water heaters, softeners, well pumps, or any connection where flexibility is desired. Connectors feature an internal dielectric insulator sleeve. By separating dissimilar metals within the waterway, this sleeve provides resistance to galvanic corrosion that is superior to conventional external dielectric insulators. 3/4" x 3/4" F.I.P. Size: 3/4"FIP X 3/4"FIP X 12" L, Material: Copper No. 634-115: Size: 3/4"FIP X 3/4"FIP X 15", Material: Copper No. 634-118: Size: 3/4"FIP X 3/4"FIP X 18" L, Material: Copper No. 634-124: Size: 3/4"FIP X 3/4"FIP X 24" L, Material: Copper