Plastic tank connector for Nuova Rade flexible water tanks.
Please note that these are only suitable for the new-style tanks (branded Nuova Rade, not Lalizas) which have the tank fittings already thermo-welded to the tank.
These fittings include the securing-collar and the o-ring.
The 12mm fitting is usually used as the outlet connector for supply to water pump.
Part reference: 72134