The TPB300 gives you the flexibility to transport water or other liquids quickly and easily. It is very easy unit to use: fill the tank through the wide filling aperture; fit the cap and transport the contents to the destination; then use the 2″ diameter outlet pipe with ¾ turn tap to empty the liquid to wherever it needs to be. The cap is vented so there is no need to loosen it during the emptying process. The tank itself is made using the rotational moulding method and is extremely strong. A very simple and convenient way to carry liquids.