Hydro Flow 3/16" ID - 1/4" OD Black Vinyl Tubing - 100' Roll
Precision tubes
Amazon.com: Hydro Flow 100 ft Roll Vinyl Tubing, Black - 3/4" ID x 1" OD : Industrial & Scientific
Hydro X Series XT Hardline 14mm Tubing
Amazon.com : Active Aqua HGTB100 1 Inch Inside Diameter Vinyl Tubing for Indoor Vegetation Growing Hydroponic Irrigation Systems and Tanks, 100 Feet, Black : Pond Filtration Tubing : Patio, Lawn & Garden