
It appears that it's a hard nylon line (wrapped in regular 3/8 rubber fuel line) with that useless pressure fitting on the end of the line and a threaded barb on the other end...
The only part I can't for the life of me identify is the threaded barb fitting. I'm almost positive it won't be available at Home Depot. (It can probably be reused, no?) Generic fuel lines, both hard nylon and rubber, are available on Amazon, I think you need around 6-9 feet of each. That's about $50 in lines.
$14 - 10" of 5/16" hard nylon fuel-grade tubing: https://www.amazon.com/Dorman-800-074-F ... +fuel+line
$22 - 25' of 3/8" rubber fuel-grade tubing: https://www.amazon.com/Pro-1-Inside-Dia ... +fuel+line
$10 - 5/16" quick connect fitting: https://www.amazon.com/Dorman-800-080-Q ... ZVZ0GF4489
(This should be enough for two line rebuilds, no?)