Sigma ProConnex 1/2-in 90-Degree Flexible Die Cast Zinc Squeeze Connector Conduit Fittings in the Conduit Fittings department at Lowes.com
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
FLEX CONNECTORS SQUEEZE TYPE
Halex, 3/8 in. Flexible Metal Conduit (FMC) Squeeze Connectors , 04203B, 50 per pack - Conduit Fittings - Amazon.com
Halex 3/4 in. Flexible Metal Conduit (FMC) Connector (3-Pack) 20422 - The Home Depot
Bridgeport 410 1" Flexible Metal Conduit Squeeze Connector, Malleable Iron | Crawford Electric Supply