Shark bite, 1/4 inch copper tube size x 50', white, PEX coil, a cross linked polyethylene tubing used for potable water application, printed with a Shark Bite imprint pattern that provides a visual aid to determine if the tube has been inserted all the way into the Shark Bite push fit fitting.
SharkBite U850G50 PEX Tubing 1/4-Inch (3/8 O.D.) x 50 ft. Coil without Oxygen Barrier Gray Color