Knapsack sprayers are an agricultural spraying tool that are designed to apply pesticides, herbicides and fertilizers on crops. This will keep the plants protected from insects and other pests. Perfect knapsack sprayers are powered by a large 25.6cc petrol powered 4Stroke Engine with an ideal work pressure ranging between 10kg/cm2- 40kg/cm2. It has a 650ml tank capacity, Perfect products are environment friendly and are made in India perfecthouseltd.com/product-category/agricultural-equipment/knapsack- power-sprayer/