The Solo 435 Classic Backpack Sprayer has a hand operated piston pump and a tank capacity of 20 litres. This Solo 435 Classic comes with straps and is contoured so that it can be carried comfortably as a backpack. The 20 litre tank is made from thick UV-resistant and chemical -resistant plastic. The efficient hand piston pump will generate a pressure of up to 90 psi (6 bar) producing a fine uniform spray that is ideal for spraying fungicides, herbicides and insecticides. All Solo hand operated garden sprayers are designed so that only the chemical-resistant parts come in contact with the spraying mixture. The high quality features on each Solo garden sprayer make them reliable and easy to use in many different environments. Specifications Tank volume: 20 litres Piston pump Maximum spray pressure: 6 bar/ 90 Psi Plastic lance Lance length: 50cm Dry weight: 5.1kg