Directly from of the Biggest Pex Systems Manufacturers. Pex A is the Most Flexible Tubing/Pipe for Potable Water and Plumbing Application. The Pipe Can be Expand for the Connection Recommended Connection For Full Water Flow: Expansion Connection (Need to Order Expansion Fitting and Rings, Tools as well) The Pipe is also with Barb Crimp, Clamp or Sleeve Connection BLUE Color Pex A Pipe 3/4" 100 ft Length with a Pex Pipe Cutter, Meets Standards: ASTM F876, F877, F1807, F1960, F2023, F2080 and F2169 Resistant - Pex Pipe Resist Against Chlorine Directly from of the Biggest Pex Systems Manufacturers. Pex A is the Most Flexible Tubing/Pipe for Potable Water and Plumbing Application. The Pipe Can be Expand for the Connection Recommended Connection For Full Water Flow: Expansion Connection (Need to Order Expansion Fitting and Rings, Tools as well) The Pipe is also with Barb Crimp, Clamp or Sleeve Connection BLUE Color Pex A Pipe 3/4" 100 ft Length with a Pex Pipe Cutter, Meets Standards: ASTM F876, F877, F1807, F1960, F2023, F2080 and F2169 Resistant - Pex Pipe Resist Against Chlorine