Premium Grade fuel line - this stuff works extremely well.  Great durability and holds up well to race fuels and ethanol blended fuels.  4.5mm fits most Honda 50 pitbikes and the 5.5mm line fits most 70cc+ pitbikes.   This stuff is great to have on hand.  Sold per foot - if you order multiple it will come in one length.  Ex: If you order 2 - 1 foot sections you will receive two feet of fuel line.