Compatible with all drip irrigation systems, this Orbit(R) 1/2" x 500' Distribution Tubing supplies a slow flow to drippers, misters, and low-volume sprinklers. Composed of a flexible polyvinyl blend, the tubing is UV-resistant and may be used above ground or underground. This tubing is sized to a .700" outside diameter. | Orbit 1/2" (.700 O.D.) x 500' Distribution Tubing