Netafim UV Polyethylene Tubing 17mm (0.56in ID x 0.6in OD) 500ft Roll: Durable tubing for irrigation systems, UV-resistant for reliable water distribution. https://www.hydroponicstown.com/19953-000121-netafim-uv-polyethylene-tubing-17mm-0-56in-id-x-0-6in-od-500ft-roll