AP Supplies Clear PVC Tubing 16mm ID x 20mm OD, 4m, Flexible Hose Pipe | Push-fits 16mm barbs; 2mm wall, see-through for flow checks, non-pressure use with liquids up to 60 degrees C

Which size do I need: 16mm inside diameter (bore), 20mm outside diameter, 2mm wall, 4m long. Match the inside size to your barb or spigot; the outside size tells you which hose clip fits (clips not included) Safe for contact with food, as the supplier states: the PVC meets EU Regulation 10/2011 and is made without cadmium, barium, lead or phthalates Non-pressure tubing: for moving water, palatable liquids, air, plant protection fluids and light chemicals without pressure. It is not reinforced, so it is not for mains or pump pressure; use a braided hose for that Clear and flexible: see liquid, air bubbles and debris through the wall. Stays supple without hardening, resists light, oxygen and abrasion, and carries hot water up to 60 degrees C Where it is used: aquariums, ponds, pumps and water features, catering and agricultural equipment, and oil or screen-wash lines on vehicles. Cut it square with a sharp knife and push it fully onto the barb