This is a 100-foot long tube made of LLDPE (linear low-density polyethylene) with an outer diameter of 1/2 inch and an inner diameter of 3/8 inch. It is designed to be resistant to ultraviolet (UV) light and is colored black for this purpose. The tubing is certified to meet the NSF (National Sanitation Foundation) standards 51 and 61, which ensures that it is safe for use in drinking water applications. It has a working pressure of 153 pounds per square inch (psi) at 73 degrees Fahrenheit (F).
