TT FLEX Stainless Steel Corrugated Water Heater Connector Flexible for Water Heater Water Softener,1" FIP x 1" FIP, 0.7" ID x 18" Length (2 Pack) - Amazon.com
Amazon.com: 18" Corrugated Stainless Steel Flexible Water Line - 1 Inch Female Threaded NPT Connector - Designed for Water Softeners Filters System Supply - Heavy Duty Bendable Flex Pipe Connections : Everything Else
SharkBite SS3088FLEX18LFA Corrugated Flexible Water Heater Connector, 3/4 Inch x 3/4 Inch FIP x 24 Inch, Push-to-Connect Braided Stainless Steel Water Heater Hose - Walmart.com
Charman Manufacturing 24-in Fip Inlet x Fip Outlet Corrugated Stainless Steel Water Heater Connector in the Appliance Supply Lines & Drain Hoses department at Lowes.com
Amazon.com : CSST Corrugated Stainless Steel Tubing 37 Ft 3/4" Flexible Natural Gas Line Pipe Propane Conversion Kit Grill Hose with Male Adapter Fittings : Patio, Lawn & Garden
Item # Corrugated-Metal-Hose-Heavy-Duty_3/8_1, 3/8 in. ID and 0.74 in. OD Corrugated Metal Hose - Heavy Duty/Higher Pressure & Corrosion Resistant On Kuriyama of America, Inc.