The high pressure water gun features removable components for greater functionality and convenience. It can be dismantled into three parts: nozzle, foam bottle and water switch. You can choose a shorter or longer version of the nozzle depending on the area you want to clean. If you want to clean narrow or deep areas, the longer nozzle is more suitable. If it's just a smooth surface that you don't need the extra length for, the shorter nozzle is easier to handle. You can use the bottle to create a foam that loosens dirt and grime. On the other hand, the water switch controls the water flow so you don't have to reach to the end of the hose to turn off the faucet. This switch, in turn, helps save water as you can quickly stop the flow of water with a simple click.