Accuflex Bevlex 209 Series Blue Translucent Air Line - 5/16" ID x 100 ft.Accuflex Bevlex 209 Series is the industry standard for draught gas supply lines. This 5 16" ID tubing is color coded blue for instant identification of air or gas lines in multi line draught systems. Constructed from food grade, high density PVC, it offers superior kink resistance and flexibility even in cold walk in environments. The thick 9 16" OD wall provides high burst strength, essential for high pressure CO2 or Nitrogen manifolds. Draft Setup