ProFlex line of universal tubing is a proprietary Fluoroelastomer (FKM) tubing that will Never
harden. ProFlex has been designed and tested to be impervious to gas, glow, diesel, and smoke oil. The thin walls allow maximum flexibility without kinking.
Standard Size Tubing has a 3/32″ ID which is exactly the same ID as the silicone fuel line that comes with every tank. It is designed to fit 1/8″ Brass tubing as well as standard size fuel fittings.