Dimensions: internal diameter 16 mm, external diameter 20 mm, length 2 meters.Multifonctionnel : utiliséas conduite d'eau, conduite d'air, etc.Excellent flexibility, resistance to torsion deformation, high resistance to deformation, non-toxic and without danger.A tube that can be used to drink water or beer, can be used in coffee machines, oxygen generators, water heaters, rice cookers, hydroponics, fish aquarium.Can be used as other connecting tube, conduit, casing and instrument etc.