Plastic tube 1/2 inch (12mm) inner diameter; for AQUA-VORTEX to connect to filter tap – see picture; about 35 mm long. (Coil not included.)
Suitable for both types of AQUA-VORTEX: Silver (stainless steel) and Gold (plated).
Soften the tube in hot water. Insert the vortex coil when the tube has become soft; push it in with a wooden utensil (like cooking spoon handle) if needed.