This flexible hydroponic tubing is great to use because it has less memory than rigid tubing and is less likely to spring back or pop out of the pot or reservoir. The material used is Food Grade quality. All sizes refer to the Internal Diameter (ID) of the tube. Note as this is flexible tubing it will help form a good seal. The 13mm is used in a Multiflow V1 system.
13mm Flexible Hydroponic Tubing 10m.