fuel pressure drop

ok, dumb question here
I'm getting an order together for some parts and I was going to add some 3/8th steel fuel line

Amazon.com: OE Zinc Automotive Steel Brake Fuel Transmission Line Tubing 3/8" OD Coil Roll: Automotive

however, when I look at rubber fuel line, it is listed as 3/8 ID
and the steel one is listed