10 METRES OF JOHN GUEST SEMI RIGID RED 12MM OD (EXTERNAL) FRESH WATER HOSE / PIPE This John Guest Semi Rigid Red Pipe will look great in any installation within your caravan, motorhome, or campervan. Not only will it provide more functionality to your camping holidays, it adds to the appearance of your vehicle. This pipe from John Guest is definitely a suitable solution to keep your water supply stable, and your appliances topped up!