1" x 10', Blue, Pex Tubing, Cross Linked Polyethylene Pipe For A Range Of Residential & Commercial Plumbing Applications, Approved For All Potable Water Systems, For Crimp, Clamp Or Push To Connect Plumbing Systems, Repeating SharkBite Imprinted Pattern Which Serves As A Visual Aid To Determine If The Tube Has Been Inserted Correctly, Feature Only Works If The Tubing Is Cut Between The SharkBite Imprint Pattern.