Cross-linked polyethylene tubing for a wide range of residential and commercial plumbing applications. Use Pex without oxygen barrier for potable water distribution and other water systems. Use Pex with oxygen barrier for radiant floor and hydronic heati g applications. 5" 10" and 20" lengths are straight tubing. • Sharkbite • Dia. In.x Lgth Ft.=1 x 100 • Color=Blue