30mm ID Red 1 Metre Length Straight Silicone Hose - AutoSiliconeHoses : Amazon.co.uk: Automotive
30mm Black Vent Hose (Moplen) - GAS IT Leisure Gas Bottles, Gas Cylinders and Gas Tanks - Catering, Motorhome, Campervan, Caravan, Farrier and Road Repair Refillable Gas Solutions.
Rubber Radiator Heater Hose 30mm (1 3/16") 3 Metre Black - Auto Silicone Hoses
Webasto heater 30mm Combustion Air Hose | 357901 | 1321557A