Primer H2O 12 litre sprayer This replacement hose is for 3722 This replacement hose is for our high pressure water tanks that provide a supply of water to cutting tools and drilling machines when standard water supply isn't available such as on building sites or even when watering plants when away from standard pressurised water The supplied battery is easily re charged and the charger is included with the sprayer 3 BAR pressure sprayer for the supply of water where a mains supply is not available or not convenient Normally used to supply water to cutting or drilling machines however the unit is not restricted to this so supplying water for plants or cleaning are also common usages