Tubing Application Fountain and Pond Pumps Color Black Hardness Shore A 68 Inside Diameter 1/2 in Material Vinyl Maximum Operating Pressure 30 psi Maximum Operating Temperature 100 Degrees F Outside Diameter 33/50 in Overall Length 20 ft Flexibility Flexible System of Measurement Inch Wall Thickness 0.08 in Features Fish Safe Inhibits Algae Growth Minimum Operating Temperature 32 Degrees F