This tubing meets the standards for NSF 51, 61, FDA, has a length of 100 feet, a maximum operating pressure of 151 psi @ 75 Degrees F and is designed for the following applications: air, water. It is white, has an operating temperature of -50 Degrees F to 140 Degrees F, is chemical-resistant and is made of polyethylene. In addition, it has ⅝ inch OD, ½ inch ID, with an inch system of measurement, with 0.06 inch wall thickness, and Shore D 45 hardness. This tubing is for use with water.