Master plumber, 1-1/4" id x 1-3/4" od x 50', clear, pvc tubing, reinforced with spiral polyester for use in pressure applications, manufactured with non-toxic fda compounds, use for flexible lines for air, water, liquids, beverages, & gases as well as drain lines for air conditioners & dehumidifiers where higher pressure or tubing wall stability is required, 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 100 psi at 70 degrees fahrenheit, tubing is marked every foot for easy measuring & cutting, dispenser box.