I recently purchased some Tygon fuel sight glass hose.
This Tygon tubing description is:
Tygon Fuel TBG F-4040-A
3/8" ID X 1/2" OD
I have eight feet available at $2.50 per foot and $5.00 flat fee shipping.
PM how much you want. I will collect via Paypal Account.
Thanks and have a great weekend.