Master plumber, 1″ x 1-1/4″ od x 50′, clear, pvc tubing, manufactured with non-toxic fda compounds, can be used for flexible lines for low pressure air, water, liquids, beverages, chemicals & gases as well as drain lines for air conditioners & dehumidifiers, excellent resistance to mild acids & chemicals, see through design allows for visual flow, not for use with ice makers or petroleum based products, for use with hose barbs & clamps, temperature range 25 to 150 degrees fahrenheit, working pressure 25 psi at 70 degrees fahrenheit, tubing is marked every foot for easy measuring & cutting, dispenser box.