This wheeled sprayer from Allen is the ideal choice for the larger lawn or turf area. This model has a 25 litre tank and 61cm (24 inch) delivery pattern. Marker wheels ensure 100% coverage. Covers up to 525 square metres (675 square yards) on one filling in just 12 minutes.The spayer operates as follows: a gear pump is driven by one of the land wheels which ensures that the liquid fed to it under gravity from the tank is delivered through the nozzles at an accurate pre-calibrated rate.