EZ-Fluid 1-Inch FIP x 3/4-Inch FIP x 18-Inch Corrugated Flexible Stainless Steel Water Heater Connector For Female Iron Water Pipes Fitting Also For Water softener,Filter, (1-Pc) - Amazon.com
Hose Master FSMM Series 1 in. Male x Male FireShield Flexible Metal Hose Connector - John M. Ellsworth Co. Inc.
3" Suction Hose Assembly with M/F Camlock Fittings - 20 ft
NK-1500 Male Threaded Nipple Type Flexible Hose | Nangoku Flexible Hose Industry | MISUMI