Flextron FTWC-B34-18B 18 Inch Lead Free Braided Water Heater Connector with 3/4 Inch Inner Diameter & 3/4 Inch FIP x 3/4 Inch MIP Fittings, Maximized Corrosion Resistance and Performance High-Quality Corrugated Braided; Flexible for Easier Connection Maximized Corrosion Resistance and Performance Easy & Fast Installation; Wont Crimp or Kink and 100% Leak Tested Built-in Dielectric Sleeves; No Need for Extra Add-On Unions Complies with Lead Free Requirments (NSF 61, AB1953) Swivel nuts for easy installation NSF/cUPC Approved Factory leak tested - 1 year warranty